Newmarch is a surname, and may refer to: Ann Newmarch (1945–2022), South Australian artist
Oliver Newmarch (1835–1920), British Indian Army officer Rosa Newmarch (1857–1940), English poet and writer on music Sally Newmarch (born 1975), Australian Olympic rower William Newmarch (1820–1882), English banker and economist Mary Newmarch Prescott (1849–1888), American magazine writer and poet
See also Newmarch Gallery, an art gallery in Adelaide, South Australia