Boys names with origin `Gaelic`
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| Name | Meaning | Derivations | Origin | |
| Abernethy | Mouth or beginning of a river. | Gaelic, Scottish | ||
| Adair | Dweller by the oak tree. | Adaire | Gaelic, Scottish | |
| Aidan | Little fire. | Aidyn, Iaden | Gaelic, Irish | |
| Alan | Handsome, fair, bright, happy. | Ailin (irish), Alaen, Alaene, Alain (french), Alaine, Alano (italian), Allan, Allen, Allin | Gaelic, Irish | |
| Allen | Handsome, fair, bright, happy. | Alan | Gaelic, Irish | |
| Angus | The only choice; chosen, possesses strength. | Ennis | Gaelic, Celtic, Scottish | |
| Argyle | From ireland | Argile, Argiles, Argyles | Gaelic | |
| Arlen | Promise | Arlan, Arland, Arlin, Arlon, Arlyn | Gaelic, Irish | |
| Armourel | Dweller by the sea. | Armourell | Gaelic | |
| Athol | From ireland. | Affol, Affolatan, Athal, Athalton, Athel, Athelton, Athil, Athilton, Atholton, Athyl, Athyton | Gaelic, Scottish | |
| Baird | The minstrel. singer of ballads. | Bairde, Bard, Barde, Bayrd, Bayrde | Gaelic, Irish | |
| Banning | Little blond, fair-haired one; son of the slayer. | Gaelic, Irish | ||
| Bard | Poet | Baird (scottish), Bairde, Barde (french), Bardoul (french) | Gaelic, Irish | |
| Beattie | One who grants blessings. | Beatie, Beatty, Beetie, Beety | Gaelic, Irish | |
| Blaine | Slender; flame. | Blain, Blane, Blaney, Blayn, Blayne (irish) | Gaelic, Irish, Old english | |
| Blair | From the marsh on the field or plain; field of battle. | Blaire | Gaelic, Irish, Scottish | |
| Bowen | Son of owen, son of the well-born one; little, victorious one. | Bohan, Bohann, Bohannon, Bowan, Bowden, Bowin, Bowon, Bowyn, Bowynn | Gaelic, Old english | |
| Boyd | Blond-haired. | Boydan, Boyde, Boyden, Boydin, Boydon, Boydyn | Gaelic, Scottish | |
| Boyne | White cow. | Boine, Boyn | Gaelic, Irish | |
| Boynton | From the white cow river town. | Boyntown | Gaelic, Irish | |
| Brady | Spirited one from the long island; broad one. | Braedy, Braidey, Braidie | Gaelic, English, Irish | |
| Brandan | Youthful, bold, brave; raven. | Branden, Brandon, Brendan, Brenden, Brendon | Gaelic, Celtic, Irish | |
| Brennan | Sip, taste of water. | Brenan, Brenen, Brennen, Brennin, Brennon, Brennun, Brennyn | Gaelic, Irish | |
| Brodie | Brother; second-born son; canal builder. short form of broderick | Brodee, Broden, Brodey, Brodi, Brodie, Brody | Gaelic, Irish, Scandinavian, Scottish | |
| Bryce | Ambitious, quick-minded; son of rhys, son of the ardent, enthusiastic one. | Brice, Bryse | Gaelic, Celtic, Scottish, Welsh | |
| Buchanan | House of the clergy. | Buchanen, Buchannan | Gaelic, Scottish | |
| C n n | Little hound. | Gaelic, Irish | ||
| Caelan | Powerful in battle. | Caelen, Caelin, Caelon, Caelyn, Cailan, Cailen, Cailin, Cailon, Cailyn, Calan, Calcalin, Cale, Callan, Callen, Callin, Caylan, Caylen, Caylin, Caylon, Caylyn | Gaelic, Irish | |
| Cain | Spear, possession; tribute | Caen, Caene, Cainan, Caine, Caineth, Cayn, Cayne, Cayneth, Kain, Kayn, Kayne | Gaelic, Hebrew | |
| Callum | Dove, peace; follower of st columbious. gentle. | Calam, Calem, Calim, Callam, Callem, Callim, Callym, Calum, Colm, Colum, Kallum, Kalum | Gaelic, Irish, Scottish | |
| Cameron | Crooked. bent nose; happy. | Camar, Camaron, Cameran, Camerin, Camerson, Cameryn, Camiren, Camiron, Camran, Camrin, Camron, Camron (scottish), Kameran, Kameren, Kamerin, Kameron, Kameryn | Gaelic, Kurd, Scottish | |
| Campbell | Crooked, bent mouth; from the beautiful, bright field. | Cambel, Cambell, Camp, Kambel, Kambell, Kamp, Kampbell | Gaelic, French, Scottish | |
| Carrick | A rock, from the rocky headland, cliff. | Carric, Carrik, Carringon, Karric, Karrick, Karrington | Gaelic | |
| Cathal | Mighty, wise in the eye of the battle. battle mighty. a masculine form of cathy, purity. | Cathel, Cathol | Gaelic, Celtic | |
| Cathmor | Great warrior; from the pure moor. a masculine form of cathy, purity. | Cathmoor, Cathmoore, Cathmore | Gaelic, Irish, Old english | |
| Cian | Ancient one, long lived. | Celin, Cianan, Cyan, Kian, Kyan | Gaelic, Irish | |
| Ciar n | Small, dark one. | Kieran | Gaelic, Irish | |
| Cillian | Of the church. | Keelan, Killian | Gaelic, Irish | |
| Clancy | Belonging to the family; red-haired | Clance, Clancee, Clancey, Clancie, Clanse, Clansee, Clansey, Clansi, Clansie, Clansy | Gaelic, Irish | |
| Cleary | Scholar, knowledge. | Clearey, Clearie | Gaelic, Irish | |
| Clunies | Meadow resting place. | Clunee, Clunees, Cluney, Cluneys, Cluni, Clunie, Cluny | Gaelic, Scottish | |
| Clyde | High, rocky area of land; heard from afar. | Clydel, Clydell | Gaelic, Irish, Scottish | |
| Cody | Cushion, pillow; helpful. | Codee, Codey, Codi, Codie | Gaelic, Irish, Old english | |
| Coile | Battle follower. | Coil, Coyle | Gaelic | |
| Coile n | Pup, cub. | Coilin, Colin | Gaelic, Irish | |
| Coinneach | Handsome, attractive one. a form of coinneach. | Canice | Gaelic, Irish | |
| Colin | Young child; peaceful dove; from the coal pool. | Cailean, Colan, Cole, Colen, Collan, Collen, Collie, Collin, Collino, Collins, Collyn, Colon, Colyn, Greek), Nicolin (french | Gaelic, Irish, Old english | |
| Colm | Dove | Gaelic, Irish | ||
| Colman | Little dove. | Gaelic, Irish | ||
| Conchobhar | Lover of hounds. | Gaelic, Irish | ||
| Conn | High | Gaelic, Irish | ||
| Cormac | Raven, son of the chariot racer; tree trunk. | Core, Corey, Cormach, Cormick, Maccormack | Gaelic, Greek, Irish | |
| Corwin | From beyond the hill; friend of the heart. | Corwyn, Corwyne, Corwynn, Corwynne | Gaelic, Old english | |
| Cosan | Path, the way. | Gaelic | ||
| Cr ost ir | Christ bearer. a form of christopher. | Gaelic, Irish | ||
| Culley | Forest | Culeah, Culee, Culey, Culie, Cullea, Culleah, Cullee, Culleigh, Cullie, Cully | Gaelic, Irish | |
| Dacey | Southerner | Dacee, Daci, Dacie, Dacy, Dacycey, Daice, Daicee, Daicey, Daici, Daicie, Daicy, Dayce, Daycee, Dayci, Daycie, Daycy | Gaelic, Irish | |
| Daegan | Black-haired. | Daegen, Daegin, Daegon, Daegyn, Dagan, Daigan, Daigen, Daigin, Daigyn, Daygan, Daygen, Daygin, Daygon, Daygyn | Gaelic, Irish | |
| Dagda | Good spirit. | Dagdah | Gaelic, Irish | |
| Daly | Counselor | Gaelic, Irish | ||
| Darren | Gift | Daran, Daren, Darian, Darien, Darin, Darion, Daron (irish), Darran, Darrian, Darrick (german), Darrien, Darrin, Darrion (irish), Darron darrun, Darryn, Darun, Daryn, Der, Deran | Gaelic, Australian, Irish, New zealand | |
| Desmond | From south munster. | Desmund, Dezmond, Dezmund | Gaelic, Irish | |
| Donahue | Brown-haired warrior. | Donahu, Donahugh, Donehue, Donohoe, Donohu, Donohue, Donohugh | Gaelic | |
| Doug | Dark stranger from the dark-blue stream. a short form of douglas. | Douge, Dougee, Dougey, Dougi, Dougie, Dougy, Dug, Dugee, Dugey, Dugi, Dugie, Dugy | Gaelic, Irish | |
| Dougal | Dark stranger from the dark-blue stream. a short form of douglas. | Doogal, Doogall, Dougall, Dougie, Douglass, Dugald, Duglass | Gaelic, Irish | |
| Douglas | Dark stranger from the dark-blue stream. | Douglass, Duglass | Gaelic, Irish | |
| Dow | Black-haired. | Gaelic, Irish | ||
| Drew | Strong, brave, courageous one. the short form of andrew. | Drewe, Dru, Drue | Gaelic | |
| Duane | Dark one, swarthy | Dewain, Dewan, Dewane, Dewayne, Duane, Dwain, Dwaine, Dwayn, Dwayne (gaelic) | Gaelic, Irish | |
| Duff | Black-haired. | Duf | Gaelic | |
| Dugan | Dark-haired; swarthy. | Doogan, Doogen, Dougan, Dougen, Douggan, Douggen, Dugen | Gaelic, Irish | |
| Duke | Leader; a sort form of marmaduke, follower of saint maedoc. | Duk | Gaelic, Irish, Latin | |
| Durbin | City dweller. | Derbon, Derbun, Durban, Durben, Durbyn | Gaelic, Latin | |
| Dwight | White; valiant. | Dwhite, Dwite, Dwyte | Gaelic, Scandinavian | |
| Eachan | Works with the horses, horseman or horse lord. | Eachen, Eachin, Eachon, Eachyn, Egan, Egen, Egin, Egon, Egyn | Gaelic, Irish | |
| Fagan | Little fire. | Faegan, Faegen, Faegin, Faegon, Faegyn, Fagen, Fagin, Fagon, Fagyn, Faigan, Faigen, Faigin, Faigon, Faigyn, Faygan, Faygen, Faygin, Faygon, Faygyn | Gaelic, Irish | |
| Fallon | Of a ruling family, descended from a ruling family. | Faline, Fallan, Fallen, Fallyn | Gaelic, Irish | |
| Farquhar | Friendly | Farquar, Farquarson, Farquharson | Gaelic | |
| Fay | Raven | Gaelic, Irish | ||
| Fearghal | Man of valour, man of strength. | Farrell, Ferdinand, Fergal | Gaelic, Irish | |
| Ferris | Iron worker. iron, rock. a form of peter.; choice | Farice, Farrice, Farris, Feris, Ferrice, Ferrise, Ferryce, Ferryse, Ferryss | Gaelic, Irish | |
| Findlay | Fair-haired, blond warrior. | Findlea, Findleah, Findlee, Findleigh, Findley, Finlay (irish), Finlea, Finleah, Finlee, Finleigh, Finnlay, Finnlea, Finnleah, Finnlee, Finnleigh, Finnley, Fyndlay, Fyndlea, Fyndleah, Fyndlee, Fyndlei | Gaelic, Celtic | |
| finley | Blond-haired | Findlay (celtic), Findlea, Findleah, Findlee, Findleigh, Findley, Finlea, Finleah, Finlee, Finleigh, Finnlay, Finnlea, Finnleah, Finnlee, Finnleigh, Finnley, Fyndl, Fyndlay, Fyndlea, Fyndleah, Fyndlee | Gaelic | |
| Finn | Blond-haired, fair complexioned; from finland. | Eifion, Fin, Finan, Finbar, Finbarr, Finian (celtic), Finnegan, Finnian, Fion, Fyn, Fynn | Gaelic, Irish, Old german | |
| Flynn | Son of the red-haired one. son of finn. | Flin, Flinn, Flyn | Gaelic, Irish | |
| Forbes | Wealthy owner of fields; headstrong. | Forbs | Gaelic, Irish | |
| Garve | From the rough place. | Garvee, Garvey, Garvi, Garvie, Garvy | Gaelic | |
| Glenrowan | From the rowan-tree valley. | Glennrowan, Glenrowen, Glenrowin, Glenrowyn, Glynnrowan, Glynnrowen, Glynnrowin, Glynnrowon, Glynnrowyn, Glynrowan, Glynrowen, Glynrowin, Glynrowon, Glynrowyn | Gaelic, Celtic | |
| Hagen | Little, young. | Hagan, Hagin, Hagon, Hagun, Hagyn | Gaelic, Irish | |
| Hogan | Young | Hogen, Hogin, Hogun, Hogyn | Gaelic, Irish | |
| Irvin | Friend of the sea. | Earvin, Eervine, Ervin, Ervine, Ervyn, Ervyne, Erwin, Erwyn, Irvine, Irving, Irvyn, Irvyne, Irwin, Irwyn | Gaelic | |
| Kael | Mighty warrior, strong. a short form of kaelan, uncertain. | Cael, Kail | Gaelic | |
| Kaelan | Uncertain, powerful warrior. | Caelan, Kaelen, Kaelin, Kaelon, Kaelyn, Kailan, Kailen, Kailin, Kailyn, Kalan, Kalen, Kalin, Kalon, Kalyn, Kaylan, Kaylen, Kaylin, Kaylon | Gaelic | |
| Kane | Honour, tribute; beautiful; golden; eastern sky. | Caen, Cain, Caine, Cane, Cayn, Cayne, Kaen, Kahan, Kain, Kainan, Kaine, Kainen, Kaney, Kayn, Kayne | Gaelic, Hawaiian, Irish, Japanese, Welsh | |
| Kayne | Possession, spear; tribute. a form of cain. | Caen, Caene, Cainan, Caine, Caineth, Cayn, Cayne, Cayneth, Kain, Kayn | Gaelic, Hebrew | |
| Keegan | Son of egan. small; fiery | Kaegan, Keagan, Keagen, Keagin, Keagon, Keegan, Keegen, Keegin, Keegon, Kegan, Kegen, Keghan, Keghen, Kegun, Kegyn, Keigan, Keigen, Keigin, Keigon, Keigun, Keigyn, Keyg, Keygan, Keygen, Keygin, Keygon | Gaelic, Irish | |
| Keelan | Slender, islander. | Kealan, Kealen, Kealin, Kealon, Kealyn, Keelen, Keelin, Keelon, Keelun, Keelyn, Keilan, Keilen, Keilin, Keilon, Keilyn, Keylan, Keylen, Keylin, Keylon, Keylyn | Gaelic, Irish | |
| Keeley | Handsome meadow. | Kealee, Kealeigh, Kealen, Keali, Kealie, Kealy, Keelea, Keeleah, Keelee, Keeleigh, Keelen, Keeli, Keelie, Keely, Keilea, Keileah, Keilee, Keileigh, Keiley, Keili, Keilie, Keily, Kelea, Keleah, Keylea | Gaelic, English, Irish | |
| Keilan | Slender one, small and slim, fair. | Kealan, Keallan, Keallin, Keelan, Keilan, Keillan, Kelan, Kylan | Gaelic, Irish | |
| Keir | Small, dark hair/complexioned. a short form of kieran. | Kerr, Keyr | Gaelic | |
| Keith | Of the forest. | Keaf, Keafe, Keaff, Keaffe, Keif, Keife, Keifer, Keiff, Keiffe, Keiffer, Keyf, Keyfe, Keyff, Keyffe | Gaelic | |
| Keller | Little companion warrior. | Keler | Gaelic, Irish | |
| Kelly | Warrior, dweller from the meadow near the woods. | K, Kealea, Kealeah, Kealee, Kealeigh, Keali, Kealie, Keallea, Kealleah, Keallee, Kealleigh, Kealley, Kealli, Keallie, Keally, Kealy, Keelea, Keeleah, Keelee, Keeleigh, Keelli, Keellie, Keelly, Keylley | Gaelic, Irish | |
| Kelvin | Friend of ships, from the narrow river. | Calvan, Calve, Calvin, Calvon, Celvan, Celven, Celvin, Celvon, Kalvan, Kalven, Kalvon, Kalvyn, Kelvan, Kelven, Kelvon, Kelvyn | Gaelic, Irish | |
| Kenneth | Handsome, kind; royal oath. | Canice, Cennydd, Cenydd, Ken, Kene, Kenley, Kenly, Kennan, Kennen, Kennet, Kennin, Kennon, Kenny, Kennyn, Kennyth, Kent, Kenton, Kenward, Kenworth, Kenyth | Gaelic, English, Irish | |
| Kentigern | Lord | Kentygern | Gaelic | |
| Keshon | God is gracious. a form of sean. | Kesaun, Kesean, Keshawn | Gaelic, African american, Hebrew | |
| Kev | A short form of kevin, handsome, gentle. | Gaelic, Irish | ||
| Kevin | Handsome, gentle. | Kevan, Keven, Kevern, Keverne, Kevin, Kevinah, Kevine, Kevirn, Kevirne, Kevon, Kevyn, Kevyrn, Kevyrne | Gaelic, Irish | |
| Killian | Small but warlike. | Kilian, Kiliane, Kilien, Killian, Killienn, Kilmer, Kylian, Kylien, Kyllian, Kyllien | Gaelic | |
| Knox | From the hill. | Knol, Knoll, Knoxx, Nox, Noxx | Gaelic, Irish | |
| Kyeden | Lengthened form of "ky / kye" | Kieden, Kyden, Kyeden | Gaelic, Irish | |
| Kyle | From the strait. | Kiel, Kilan, Kile, Kilen, Kiley, Kyel, Kyele, Kylan, Kylar, Kylen, Kyler (english), Kylon | Gaelic, Irish | |
| Kylon | From the strait. a form of kyle; ; | Kilon, Kilonu | Gaelic, Greek, Hawaiian, Irish | |
| Kyran | Dusky, dark-haired. a form of kieran. | Gaelic | ||
| Lamorna | Beloved. | Lamornah | Gaelic, French | |
| Lawler | Mumbler of words, softly spoken. | Law, Ler, Leri, Lerie, Lery | Gaelic | |
| Leif | Beloved; broad river. | Gaelic), Laif, Leif, Leiff, Leith (scottish, Leyf, Lief | Gaelic, Scandinavian, Scottish | |
| Lennon | Little cap, cloak. | Lannan, Lenna, Lennen, Lennin, Lennyn | Gaelic | |
| Lennox | Grove of elm trees. | Lenox | Gaelic | |
| Les | From the grey fortress, garden court by the pool meadow. the short form of names starting with 'les'. | Less | Gaelic, Scottish | |
| Leslie | From the grey meadow, garden court by the stream meadow. | Leslea, Lesleah, Leslee, Leslei, Lesleigh, Lesley, Lesli, Lesly, Lezlea, Lezleah, Lezlei, Lezleigh, Lezley, Lezli, Lezlie, Lezly | Gaelic, Scottish | |
| Mac | Son | Mack, Mak | Gaelic, Scottish | |
| Macdonald | Donald's son, son of the world ruler. | Mackdonald, Makdonald, Mcdonald | Gaelic | |
| Maclean | Leaner's son, son of the lion-like one. | Macklean, Mcclean | Gaelic | |
| Macnair | Nair's son, son of the heir. | Macknair, Macknayr, Mcnair, Mcnayr | Gaelic, Scottish | |
| Malcom | Follower of saint columba. | Malcolm, Maolcolm | Gaelic, Irish, Scottish | |
| Malise | Servant of jesus | Malice, Malyca, Malyse | Gaelic | |
| Malvyn | Armoured chief or ruler. | Malvan, Malven, Malvin, Malvon, Melvan, Melvin, Melvon, Melvyn | Gaelic, Irish | |
| Melvin | Mel's friend from the mill; sword friend. | Melvan, Melven, Melvern, Melverne, Melvine, Melvirn, Melvirne, Melvyn, Melvyrn, Melvyrne | Gaelic, Irish, Old english | |
| Morven | Sea mariner, sea raven, child of the sea. | Morhorven, Morvan | Gaelic, Scottish | |
| Muir | From the marsh | Muire, Muyr, Muyre | Gaelic, Old english, Scottish | |
| Muirhead | From the top of the marsh | Muyrhead | Gaelic, Scottish | |
| Murdock | Wealthy sea mariner. | Murdoc, Murdock, Murdox, Mutagh (irish) | Gaelic, Scottish | |
| Murray | Sailor from the settlement. | Murae, Murai, Muray, Murrae, Murrai, Murree, Murrey, Murri, Murrie, Murry | Gaelic, Scottish | |
| Neil | Champion | Neal (irish), Neale, Neall, Nealle, Nealon, Nealy, Nealye, Neel, Neele, Neell, Neelle, Neile, Neill, Neille (scandinavian), Nel, Nels (scandinavian), Nial, Niale, Niall (scottish), Nialle, Niel, Niele | Gaelic, Irish | |
| Nevin | Little saint; nephew. | Nefan, Nefen, Nefin, Nevan, Neven, Nevins, Nevon, Nevyn, Nivan, Niven (english), Nivon, Nivyn, Nyvan, Nyven, Nyvin, Nyvon, Nyvyn | Gaelic, Irish, Old english | |
| Nigel | Black, dark-haired; champion. | Niegal, Niegel, Nigal, Nigiel, Nigil, Nigile, Nijel, Nygal, Nygel | Gaelic, Latin | |
| Nolan | Famous, descended from nobility. | Noland, Nolen, Nolin, Nolon, Nolyn | Gaelic, Irish | |
| Ogilvie | High; from the high hill or peak. | Ogil, Ogyl, Ogylvie | Gaelic, Welsh | |
| Ona | Unity; graceful; donkey. | Gaelic, Greek, Iriah, Latin, Lithuanian | ||
| Oren | Pine tree; pale-complexioned. | Oran, Orin, Oron, Oryn | Gaelic, Hebrew | |
| Quinn | Fifth's son estate, wisdom. | Quin, Quyn, Quynn | Gaelic, Irish | |
| Rafferty | Rich, son of prosperity. | Rafertee, Rafertey, Raferti, Rafertie, Raferty | Gaelic, Irish | |
| Riley | Valiant, war-like. | Reilea, Reileah, Reilee, Reileigh, Reili, Reilie, Reillea, Reilleah, Reillee, Reilleigh, Reilli, Reillie, Reilly, Reily, Rylea, Ryleah, Rylee, Ryleigh, Ryley, Ryli, Rylie, Ryly | Gaelic, Irish | |
| Riordan | The king's poet | Ryordan | Gaelic, Irish | |
| Roarke | Famous ruler | Rork, Rorke, Rourk, Rourke, Ruark | Gaelic, Irish | |
| Rogan | Red-haired, spirited redhead. | Rogen, Rogin, Rogon, Rogun, Rogyn | Gaelic, Irish | |
| Rooney | Red-haired. | Roonee, Rooni, Roonie, Roony, Rowan, Rowen, Rowney | Gaelic, Irish | |
| Rory | The ruddy one, the red king. | Roree, Rorey, Rori, Rorie, Ruaidhri (irish), Rurik (slavic) | Gaelic, Irish | |
| Roscoe | From the deer forest, red; headland; famous. | Rosco, Roscow | Gaelic, Old german, Scandinavian, Scottish | |
| Ross | Red-haired; headland; famous; from the peninsula. | Ros, Rosse | Gaelic, Old french, Old german, Scottish | |
| Ryan | Little king. | Rhian, Rhien, Rhion, Rhiun, Rhiyn, Rian, Rien, Rion, Riun, Riyn, Ryann, Ryen, Ryin, Ryon, Ryun | Gaelic, Irish | |
| Sholto | The teal duck; sower of seeds. | Gaelic, Celtic, Irish | ||
| Skene | Bush | Sken | Gaelic | |
| Strahan | Poet, wisdom. | Gaelic, Irish | ||
| Struthers | From the stream. | Gaelic, Irish | ||
| Sweeney | Little hero; strength. | Swe3anie, Sweaney, Sweani, Sweany, Sweenee, Sweeni, Sweenie, Sweeny | Gaelic, Irish, Old english | |
| Tab, tabbener | Drummer; shining, brilliant; spring | Tabar, Tabbner, Tabener, Taber, Tabi, Tabie, Tabir, Tabner, Tabor (persian), Taby, Tabyr | Gaelic, German, Middle english, Old french | |
| Taggart | Son of the prelate. | Tagart, Tagert, Taggert, Taggirt, Taggurt, Taggyrt, Tagirt, Tagurt, Tagyrt | Gaelic | |
| Tain | Stream | Taine, Tayn, Tayne | Gaelic | |
| Taine | Stream | See tain | Gaelic | |
| Tavis | Twin. a scottish form of thomas. | Tavish, Tevis | Gaelic, Scottish | |
| Tavish | Twin. a form of thomas. | Mctavish, Mctavysh, Tavis, Taviss, Tavys, Tavysh, Tavyss | Gaelic | |
| Tearlach | Strong. courageous. a form of charles. | Tearlache, Tearloc, Tearloch, Tearloche, Tearlock, Tearlok | Gaelic | |
| Torin | Chief | Thorfin, Thorin, Thorstein, Thoryn, Torine, Torrin, Torrine, Torryn, Torryne, Toryn | Gaelic, Irish | |
| Tormey | Thunder spirit, thor's spirit. | Tormee, Tormi, Tormie, Tormy | Gaelic, Irish | |
| Torquil | Thor's helmet. | Thirkell, Thorkel, Torcall, Torkel, Torkill | Gaelic, Scottish | |
| Torrance | From the place with the small, rocky hills. | Gaelic, Irish | ||
| Tracy | Warrior; courageous. | Trace, Tracee, Tracey, Traci, Tracie, Treacey, Treaci, Treacie, Treacy | Gaelic, Irish, Latin | |
| Trevelyan | From elian's homestead, from the uplifting one's homestead. | Trevelian | Gaelic | |
| Troy | Descendant of the foot soldier. also can be derived from the ancient greek city by that name. | Troi, Troye | Gaelic, Irish | |
| Tully | Lives with the peace of god, mighty people. | Tulea, Tuleah, Tulee, Tuley, Tuli, Tulie, Tullea, Tulleah, Tullee, Tulley, Tulli, Tullie, Tuly | Gaelic, Irish | |
| Tynan | Comes from the anglicised version of the gaelic name "o teimhneain", which is derived from the word teimhean, meaning 'dark'. | Tinan, Tinane, Tynane | Gaelic, Irish | |
| Tyrone | Monarch, royalty; from owen's land, from the well born one's land; sun, throne. | Teiron, Teirone, Terron, Tiron, Tirone, Tirown, Tirowne, Tyron, Tyroney, Tyronn, Tyroun, Tyrown, Tyrowne | Gaelic, Greek, Irish, Old persian | |
| Tyrus | Monarch, royalty, king; from owen's land, from the well born one's land; sun, throne. | Tirus, Tiruss, Tyrus, Tyruss | Gaelic, Greek, Irish, Old persian | |
| Venn | Fair-haired; dweller at the marsh. | Ven | Gaelic, Greek, Irish |