Nepomnyashchiy () is a male Russian surname that has a large number of transliterations. Its feminine counterpart is Nepomnyashchaya (). Notable people with the surname include:
Aleksandr Nepomnyashchiy (1968–2007), Russian poet and singer Aleksey Nepomniaschiy (born 1980), Russian and Ukrainian journalist Alex Nepomniaschy, American cinematographer Ian Nepomniachtchi (born 1990), Russian chess grandmaster Valery Nepomnyashchy (born 1943) Russian association football player and manager