James McLachlan (9 March 1871 – 1 December 1956) was an Australian politician. Born in Alma, South Australia, he was educated at Winham College before becoming a farmer at Dalkey. After working as a storekeeper and agent, he was elected to the South Australian House of Assembly as the Nationalist member for Wooroora in 1918, serving until 1930. In 1934, he was elected to the Australian Senate as a United Australia Party Senator for South Australia. He held the seat until his retirement in 1946 (by which time he was a member of the Liberal Party. McLachlan died in 1956.[1]