Venäläinen is a Finnish surname (meaning "a Russian"). People with this surname include:
Ilja Venäläinen (born 1980), Finnish football player
Jari Venäläinen (born 1967), Finnish runner; husband of Marjo Venäläinen
Kari Venäläinen (born 1968), Finnish harness racer
Kati Venäläinen (born 1975; née Sundqvist), Finnish cross-country skier
Marjo Venäläinen (born 1971); Finnish runner; wife of Jari Venäläinen
Robert Venäläinen (born 1969), Swedish handball player
Sami Venäläinen (born 1981), Finnish ice hockey player