John Andrew Mara (July 21, 1840 – February 11, 1920) was a Canadian merchant, rancher and a politician at both the provincial and federal levels.
Mara was elected to four terms in the Legislative Assembly of British Columbia.
Mara's alleged outrage of their sister led to the McLean brothers' bloody rampage across the Nicola Country and the death of provincial magistrate and gold commissioner Johnny Ussher.
Mara owned the large ranchlands between Enderby and Sicamous where the Okanagan and Shuswap countries meet.
Her brother, and therefore Mara's brother-in-law, was Sir Francis Stillman Barnard, 10th Lieutenant-Governor of British Columbia (1914–1919).