Dembiński or Dembinski is a surname, and may refer to:
Bolesław Dembiński (1833–1914), Polish composer and organist Henryk Dembiński (1791–1864), Polish engineer and general Henryk Dembiński (politician) (1908–1941), Polish political activist and journalist Jacek Dembiński (born 1969), Polish footballer Paul Dembinski (born 1955), Polish-Swiss economist Ryszard Dembiński (1924–2008), Polish army officer Stefan Dembiński (1887–1972), Polish general Walenty Dembiński (died 1585), statesman in the Kingdom of Poland