Martz is a surname. It may refer to:
Andrew Martz (1924–2002), Russian sculptor Austin Martz (born 1992), American soccer player Charles S. Martz (1903–1966), American photographer, painter, inventor, and entrepreneur Clyde O. Martz (1920–2010), American attorney and politician Edward Ralph Martz (1930–2007), American actor Edwin P. Martz (1916–1967), American physicist and astronomer Gary Martz (born 1951), American baseball player Hendrik Martz (born 1968), German actor Íngrid Martz (born 1979), Mexican actor and model Jasun Martz (born 1953), American musician and artist Jennifer Martz (born 1977), American volleyball player Joe Martz (born ?), American politician and civil servant Judy Martz (1943–2017), American politician, businesswoman, and speed skater Karl Martz (1912–1997), American studio potter, ceramist, and teacher Louis L. Martz (1913–2001), American English literature professor, library director, and writer Mike Martz (born 1951), American football coach Randy Martz (born 1956), American baseball player and coach William Martz (1945–1983), American chess master
See also Marz (surname), a similarly spelled surname