John Fenton (3 July 1791 – 25 July 1863) was a British politician.

Born at Lower Crimble Farm,^[1] Fenton lived in Rochdale, where he worked as a banker. At the 1832 UK general election, he stood for the Whigs in Rochdale. He won the seat but was defeated at the 1835 UK general election. In 1837, a by-election arose in the town, which he won with a majority of 25. He held the seat in the 1837 UK general election but chose not to contest it in 1841.^[2]

Fenton's son, Roger, became a noted photographer.^[3] Another son, Arthur, married the novelist Gertrude Fenton.^[4]