Klonowski (feminine: Klonowska, plural: Klonowscy) is a surname. Notable people with the surname include:
Ewa Klonowski (born 1946), Polish-born forensic anthropologist Henry Klonowski (1898–1977), American Catholic bishop Marta Klonowska (born 1964), Polish glass maker Włodzimierz Klonowski (1945–2020), Polish biomedical physicist
See also
Klonowskie Range