John Eyre (June 1824 – May 13, 1882) was an Ontario lawyer and political figure.
He represented Northumberland East in the Legislative Assembly of Ontario as a Liberal from 1867 to 1871.
He was born in Launceston, Cornwall, United Kingdom in 1824 and came to Cobourg with his family in 1832.
He settled at Brighton in 1853 and married Calista Stevens, granddaughter of bishop John Reynolds, in 1856.
Eyre was defeated in the 1871 election for the same seat by William Wilson Webb.