Dicker is a surname. Notable people with the surname include:
Cintia Dicker (born 1986), Brazilian modelFred Dicker (21st century), American radio hostFredric U. Dicker (21st century), American columnistFriedl Dicker-Brandeis (1898–1944), Austrian artist and educator murdered by the Nazis in the Auschwitz-Birkenau extermination campGary Dicker (born 1986), Irish footballerJohn Dicker (1815-1895), English cricketerLes Dicker, (born 1926), English professional footballerRuth Dicker (1919-2004), American painterSamuel Dicker (died 1760), English politician