Justinas is a masculine Lithuanian given name, equivalent to Justin. Notable people with the name include:
- Justinas BerÃ
¾anskis (born 1989), Lithuanian steeplechase runner
- Justinas JanuÃ
¡evskij (born 1994), Lithuanian footballer
- Justinas Kinderis (born 1987), Lithuanian modern pentathlete
- Justinas LagunaviÃÂius (1924âÂÂ1997), Lithuanian basketball player
- Justinas Marazas (born 2000), Lithuanian footballer
- Justinas MarcinkeviÃÂius (1930âÂÂ2011), Lithuanian poet and playwright
- Justinas Pranaitis (1861âÂÂ1917), Lithuanian Catholic priest
- Justinas Staugaitis (1866âÂÂ1943), Lithuanian Roman Catholic bishop, politician, educator and writer
- Justinas Usonis (born 1975), Lithuanian lawyer and legal scholar