| Lake | County | Latitude | Longitude |
| T Briggs Lake | Sheridan | 42.175911 | -102.519495 |
| Tate Lake | Cherry | 42.433057 | -100.565552 |
| Taylor Lake | Sheridan | 42.146180 | -102.286428 |
| Teal Lake | Lancaster | 40.555618 | -96.877659 |
| Tercett Lake | Morrill | 41.900993 | -102.743578 |
| The Chute | Cedar | 42.830028 | -97.243403 |
| Thirty-One Lake | Cherry | 42.441100 | -101.935651 |
| Thirty-Six Lake | Cherry | 42.446474 | -101.834275 |
| Three Corners Lake | Cherry | 42.426940 | -101.749766 |
| Three Lakes | Cherry | 42.092965 | -101.709745 |
| Threemile Lake | Arthur | 41.643176 | -101.497995 |
| Thruston Lake | Sheridan | 42.021909 | -102.116034 |
| Tin Can Lake | Sheridan | 42.137813 | -102.257753 |
| Tony Lake | Cherry | 42.259775 | -101.944277 |
| Tri County Supply Ca | Lincoln | 40.998724 | -100.501456 |
| Trout Lake | Cherry | 42.580897 | -100.614966 |
| Trucks Lake | Cherry | 42.969628 | -102.057371 |
| Turkey Track Lake | Sheridan | 42.137298 | -102.582023 |
| Turpin Lake | Cherry | 42.406100 | -101.873968 |
| Twentyone Lake | Cherry | 42.469545 | -100.460137 |
| Twin Lake | Cherry | 42.412267 | -101.430578 |