| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 981 | Thadeus | Greek | Thaddeus was one of the 12 apostles described in the New Testament of the Bible. | M | |
| 982 | Thamyris | Greek | A musician punished for hubris. | M | |
| 983 | Thanasis | Greek | Noble. | M | |
| 984 | Thanatos | Greek | Death. | M | |
| 985 | Thanos | Greek | Noble. | M | |
| 986 | Thaumas | Greek | Father of the Harpies. | M | |
| 987 | Theo | Greek | God given. | M | |
| 988 | TheocIymenus | Greek | Befiended by Telemachus. | M | |
| 989 | Theodon | Greek | God given. | M | |
| 990 | Theodor | Greek | God given. | M | |
| 991 | Theodore | Greek | God-given. Famous Bearer: 19th century U.S. President Theodore Roosevelt. | M | |
| 992 | Theodosios | Greek | Gracious gift. | M | |
| 993 | Theodrekr | Greek | Gracious gift. | M | |
| 994 | Theodric | Greek | God given. | M | |
| 995 | Theon | Greek | Godly. | M | |
| 996 | Theophile | Greek | Divinely loved. | M | |
| 997 | Theophilus | Greek | God-loving. | M | |
| 998 | Theron | Greek | Hunter; Untamed. | M | |
| 999 | Therron | Greek | Untamed. | M | |
| 1000 | Thersites | Greek | Soldier in the Trojan War. | M | |