John Lloyd (Jack) Price (14 February 1882 – 23 April 1941) was an Australian politician and trade unionist. He was an Australian Labor Party member of the South Australian House of Assembly for Port Adelaide from 1915 to 1925. He later served in the Australian House of Representatives for Boothby from 1928 until his death in 1941, but left the Labor Party and joined the United Australia Party, following the 1931 Labor split over government responses to the Great Depression.