Jacob Hendrik Smit, CMG (3 September 1881 – 22 July 1959) was a Southern Rhodesian merchant and politician. Born in the Netherlands, Smit migrated to Rhodesia and traded as a merchant, before becoming Southern Rhodesia's Minister of Finance in 1933. Orthodox in his economic policies, Smit resigned from Godfrey Huggins' government in 1942 and later formed the right-wing Liberal Party. He was Southern Rhodesia's Leader of the Opposition from 1946 to 1948, when he lost his seat.