Niemirowski, feminine: Niemirowska is a Polish-language toponymic surname meaning "from Nemyriv (now in Ukraine)" or "from Niemirów (Poland)".
As a Polish noble surname, it, together its variant, Niemierowski, belonged to the Trzaska coat of arms heraldic clan.
The Russian-language variant is Nemirovsky / Nemirovskaya, the Ukrainian one is Nemyrivskyi / Nemyrivska.
The surname may refer to:
David Nemirovsky (born 1976), Canadian ice hockey player Irène Némirovsky (1903–1942), novelist of Ukrainian Jewish origin, who lived in France Leopold Niemirowski (1810–1883), Polish painter Ludwik Bernstein-Niemirowski, Lewis B. Namier Mikhail Nemirovsky (born 1974), Canadian-German ice hockey player Mordechai Nemirovsky, later Mordechai Namir Pascal Nemirovski (born 1962), French piano player and teacher Yael Nemirovsky (born 1944), Israeli electrical engineer