Olga Eduardovna Landik (Russian: ????? ?????????? ??????; born 2 January 1980) is a retired Russian breaststroke swimmer who won a silver medal in the 4×100 m medley relay at the 1997 European Aquatics Championships.
She also competed in the 100 m breaststroke at the 1996 Summer Olympics.Landik started swimming in a club since 1987, and in 1994 won a gold medal at the Junior European Championships.
During her career she won 10 national senior titles.
After retirement, she worked as a swimming coach (1998-2000) and then as a stylist.
In 2003, she graduated with honors from a Sports Academy and later enrolled to the Saint Petersburg State Polytechnical University.