Reinach may refer to:
Places Reinach, Aargau (Reinach AG), a municipality in Switzerland Reinach, Basel-Landschaft (Reinach BL), a municipality in Switzerland
People Adolf Reinach (1883–1917), German philosopher Adolphe Reinach (1887–1914), French archaeologist Cobus Reinach (born 1990), South African rugby player Elna Reinach (born 1968), South African tennis player Jacques de Reinach (1840–1892), banker implicated in the Panama scandal Joseph Reinach (1856–1921), French author and politician Salomon Reinach (1858–1932), French archaeologist and religious historian Théodore Reinach (1860–1928), French archaeologist, mathematician, jurist, historian and politician