Rimantas (shortened as Rimas) is a masculine Lithuanian given name. Notable people with the name include:
Rimantas Astrauskas (b. 1955), physicist, ecologist, and signatory of the 1990 Act
Rimantas Jonas Dagys (born 1957), Lithuanian chemist and politician, member of Seimas (1992–1996, 1996–2000), since 2008 minister
Rimantas Dichavičius (born 1937), Lithuanian photographer
Rimantas Driežis (born 1959), Lithuanian painter
Rimantas Dūda (born 1953), Lithuanian painter
Rimantas Grigas (born 1962), Lithuanian basketball coach, currently signed with Žalgiris Kaunas
Rimantas Kaukėnas (born 1977), Lithuanian basketballplayer
Rimantas Sakalauskas (b. 1951), Lithuanian sculptor and a recipient of the Lithuanian National Prize
Rimantas Antanas Stankevičius (1944–1990), cosmonaut
Rimantas Šidlauskas (born 1962), diplomat, ambassador
Rimantas Šulskis (1943–1995), Lithuanian sculptor and painter
Rimantas Taraškevičius (b. 1949), politician, mayor of Klaipėda
Rimantas Žvingilas (born 1973), Lithuanian international football striker