Schlick or Schlicke is a German surname. Notable people with the surname include:
People Moritz Schlick (1882–1936), German philosopher and the founding father of logical positivism and the Vienna Circle Arnolt Schlick (c. 1457–c. 1521), German organist and composer of the Renaissance Robert H. Von Schlick (1875–1941), German-born United States Army private Ernst Otto Schlick (1840–1913), German engineer Katherine Schlick Noe, Professor of Education at Seattle University Björn Schlicke (born 1981), German footballer Heinz Schlicke (1912–2006), German-born engineer and author The Counts von Schlick, who mined silver for coins named Joachimsthaler
See also Schlick's approximation, an approximation of the BRDF of metallic surfaces Schlick, onomatopoeic slang for female masturbation Vito Schlickmann (1928–2023), Brazilian Roman Catholic prelate