Osvaldas is a Lithuanian masculine given name. It is a cognate of the name Oswald. Notable people with the name include:
Osvaldas Balakauskas (1937–2026), Lithuanian composer of classical music and diplomat Osvaldas Jablonskis (1944–2026), Lithuanian painter Osvaldas Matulionis (born 1991), Lithuanian basketball player Osvaldas Olisevičius (born 1993), Lithuanian basketball player Osvaldas Pikauskas (1945–1995), Lithuanian-born Soviet and Russian military leader