Niewiadomski

Niewiadomski (feminine: Niewiadomska) is a surname. Notable people with the surname include:


 * Eligiusz Niewiadomski (1869–1923), Polish painter and art critic
 * Julia Niewiadomska (born 2002), Polish handballer
 * Krzysztof Niewiadomski (born 1970), Polish luger
 * Mariusz Niewiadomski (born 1959), Polish footballer
 * Zbigniew Niewiadomski (born 1946), Polish sprint canoer