| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 6101 | Thornley | English | From the thorny meadow. | M | |
| 6102 | Thornly | English | From the thorny meadow. | M | |
| 6103 | Thornton | English | Town of thorns. Thorn variants are English surnames occasionally used as given names. | M | |
| 6104 | Thorntun | English | From the thorn tree farm. | M | |
| 6105 | Thorp | English | From the village. | M | |
| 6106 | Thorpe | English | From the village. | M | |
| 6107 | Thronton | English | Town among the thorns. | M | |
| 6108 | Thrythwig | English | Strong warrior. | M | |
| 6109 | Thunder | English | Stormy tempered. | M | |
| 6110 | Thurhloew | English | From Thor's hill. | M | |
| 6111 | Thurleah | English | From Thor's meadow. | M | |
| 6112 | Thurleigh | English | From Thor's meadow. | M | |
| 6113 | Thurlow | English | From Thor's hill. | M | |
| 6114 | Thurmond | English | Thor's protection. | M | |
| 6115 | Thurstan | English | Thor's stone. | M | |
| 6116 | Thurston | English | Thor's stone. | M | |
| 6117 | Thurstun | English | Thor's stone. | M | |
| 6118 | Tiahna | English | Abbreviation of Tatiana. | F | |
| 6119 | Tiane | English | Abbreviation of Tatiana. | F | |
| 6120 | Tianna | English | Abbreviation of Tatiana. | F | |