Voldemārs Lūsis (born 7 December 1974 in Riga) is a former Latvian athlete, who competed in the javelin throw. He is the son of Jānis Lūsis (1939-2020) and Elvīra Ozoliņa. Lūsis finished in eleventh place in 2001 World Championships. He competed at the 2000 and 2004 Summer Olympics without reaching the final. During his career he was coached by Valentīna Eiduka.
| 1998 | European Championships | Budapest, Hungary | 20th | 75.14 m | |
| 2000 | Olympic Games | Sydney, Australia | 18th | 80.08 m | |
| 2001 | World Championships | Edmonton, Canada | 11th | ||
| 2003 | World Championships | Paris, France | 19th | 75.15 m | |
| 2004 | Olympic Games | Athens, Greece | 17th | 79.27 m |