| Tiila | Gift of God; Joy of Happiness |
| Tiinus | A name meaning a small, humble person. |
| Tiitus | Derived from the Latin for honorable. |
| Timmo | A variant of the name Timothy or Tim. |
| Timofei | One who honors God |
| Timoi | A Finnish variant of the name Timothy. |
| Timotei | The Romanian form of the name Timothy. |
| Timukki | A diminutive form of the name Timothy. |
| Tobu | A name of uncertain origin. |
| Toffe | A variant of the name Tobias. |
| Tofferi | A variant of the name Toffer. |
| Toikka | A Finnish surname of old roots. |
| Toimi | Active; Enterprising |
| Toiva | A rare Finnish given name form. |
| Toivakka | A place name used as a surname. |
| Toivikki | A name derived from the word hope. |
| Toivo | A Finnish name meaning hope. |
| Toivottu | A name meaning the wished for. |
| Tolkki | A name meaning an interpreter. |
| Tolppi | Noble Majesty Wolf |
| Tommo | A diminutive form of Thomas. |
| Toomas | The Estonian version of Thomas. |
| Tooni | A Finnish name meaning precious. |
| Topi | A Finnish form of the name Tobias. |
| Topia | A name meaning a place or garden. |
| Topias | The Finnish version of Tobias. |
| Topiia | A variant spelling of Topias. |
| Topija | A rare variant of the name Topias. |
| Topijas | A variant form of the name Tobias. |
| Toppi | A Finnish name meaning a summit. |
| Toppiija | A Finnish name meaning top or peak. |
| Toppo | Mountain or hill |
| Toppu | A name meaning a small, round hill. |
| Torolf | Derived from Thor and a wolf spirit. |
| Torro | A name meaning a bull or strong man. |
| Torste | Meaning Thors stone or firm rock. |
| Torsti | Stone; Thor's Stone |
| Totte | A name meaning a gift from the gods. |
| Totti | A name meaning a beloved little one. |
| Touko | A name meaning sowing or springtime. |