Mentz is a former form of Mainz in Germany. It may also refer to:
Places Mentz, New York Mentz, Texas
People August Mentz (1867–1944), Danish botanist Hendrik Mentz (1877–1938), South African politician Henno Mentz (born 1979), South African rugby player Henry Mentz (1920–2005), Federal District Judge, American jurist and scholar Johann von Mentz (died 1583), Governor of Ösel (1576–1584) MJ Mentz (born 1982), South African rugby player (brother of Henno)
See also Menz, a former province of Ethiopia Mintz Mentzer Mentzen (surname)