Samuel Jacob Thompson (September 2, 1845 – December 2, 1909[1]) was a farmer, veterinarian and political figure in Manitoba.
He represented Norfolk from 1886 to 1892 in the Legislative Assembly of Manitoba as a Liberal.
Thompson practised as a veterinary surgeon in Brantford and then came to Manitoba in 1881, settling in Carberry.
Thompson operated a hotel and livery there until 1884, continuing to farm in the area.
After leaving politics, he served as provincial veterinarian.