Critz, de Critz (also Decritz), and Kritz is a surname. Notable people with the name include:
Critz
Hugh Critz (1876–1939) President of Mississippi State University
Hughie Critz (1900–1980), American second baseman in Major League Baseball
Mark Critz (born 1962), American politician from Pennsylvania
de Crtiz (Decritz)
John de Critz (1551/2–1642) Flemish painter
Thomas de Critz (1607–1653), English painter
Kritz
Karl Kritz (1906–1969), Austrian conductor
Ori Kritz, Israeli language and literature professor