| Lionginas Šepetys | |
| Office: | Chairman of the Supreme Soviet of the Lithuanian SSR |
| Birth Date: | 23 November 1926 |
| Birth Place: | Kazliškiai, Ukmergė District |
| Death Date: | [1] |
| Death Place: | Vilnius, Lithuania |
| Primeminister: | Vytautas Sakalauskas Ringaudas Songaila |
| Predecessor: | Ringaudas Songaila |
Lionginas Šepetys (23 November 1926 – 9 December 2017) was a Lithuanian politician. He became Chairman of the Supreme Soviet of the Lithuanian SSR in 1981. In 1990 Šepetys was among those who signed the Act of the Re-Establishment of the State of Lithuania.[2]
