| Balys Gajauskas | |
| Order4: | Member of Seimas of Lithuania |
| Term Start4: | 1990 |
| Term End4: | 1992 |
| Birth Date: | 24 February 1926 |
| Birth Place: | Vilkaviškis, Lithuania |
| Death Place: | Vilnius, Lithuania |
| Spouse: | Irena Gajauskienė |
| Children: | Gražina Gajauskaitė |
Balys Gajauskas (24 February 1926 – 28 September 2017) was a Lithuanian politician. In 1990 he was among those who signed the Act of the Re-Establishment of the State of Lithuania. In 1978 he became a prisoner of conscience after being sentenced for "anti-Soviet agitation and propaganda" by the Supreme Court of the Lithuanian SSR. Before that he had served a 25-year sentence for having participated in the Lithuanian anti-Soviet resistance, being released in 1973.[1]