Tertyshny (), feminine: Tertyshnaya is a Russian-language surname. Notable people with the surname include:
Alexei Tertyshny (born 1977), Russian ice hockey player and coach Dmitri Tertyshny (1976–1999), Russian ice hockey player Evgeny Tertyshny (1935–2025), Soviet politician and engineer Sergey Tertyshny (born 1970), Russian ice hockey player