John Steer (1824–1918) was an English-born merchant and political figure in Newfoundland.
He represented Trinity Bay in the Newfoundland and Labrador House of Assembly from 1873 to 1878 as a Conservative.
Steer married Amelia, the sister of Charles R. Ayre.
He worked in partnership with his brother-in-law from 1844 to 1858 and then opened his own dry goods store.
His son Francis Henry Steer later served in the Newfoundland legislative council.