Alfred Izydor Romer (Römer or Roemer, Belarusian: Альфрэд Ізідор Ромер; 16 May 1832, Vilnius – 24 January 1897, Karalinova, Pastavy Raion) was a Polish-Lithuanian painter, sculptor, printmaker and medallist from the family of Baltic-German origins, who worked in what is now Lithuania and Belarus.