| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 1101 | Tavin | Irish | Variant of the word 'teeve' meaning hillside. | M | |
| 1102 | Tavio | Irish | Variant of the word 'teeve' meaning hillside. | M | |
| 1103 | Tavion | Irish | Variant of the word 'teeve' meaning hillside. | M | |
| 1104 | Tavis | Irish | Variant of the word 'teeve' meaning hillside. | M | |
| 1105 | Tavon | Irish | Variant of the word 'teeve' meaning hillside. | M | |
| 1106 | Tawnya | Irish | A green field; the warm sandy color of a lion's coat. | M | |
| 1107 | Teaghue | Irish | Poet. | M | |
| 1108 | Teague | Irish | Poet; Handsome. | M | |
| 1109 | Terence | Irish | Old form of the Roman clan name Terrance. | M | |
| 1110 | Teris | Irish | Son of Terrence. | M | |
| 1111 | Terrence | Irish | Tender. | M | |
| 1112 | Terriss | Irish | Son of Terrence. | M | |
| 1113 | Tevin | Irish | Variant of the word 'teeve' meaning hillside. | M | |
| 1114 | Tevis | Irish | Variant of the word 'teeve' meaning hillside. | M | |
| 1115 | Thurl | Irish | Strong fort. | M | |
| 1116 | Thurle | Irish | Strong fort. | M | |
| 1117 | Tiarchnach | Irish | Regal. | M | |
| 1118 | Tibbot | Irish | Irish form of Theobald. | M | |
| 1119 | Tier | Irish | Regal. | M | |
| 1120 | Tiernan | Irish | Regal. | M | |