John Walker Mitchell (1832 – 23 July 1914) was a Scottish-born New Zealand politician.

He immigrated to New Zealand from Australia in 1862.

He was a losing candidate in the 1871 Invercargill mayoral election and 1895 Invercargill mayoral election.

He was twice mayor of Invercargill (1875–1876, 1889–1890) and served as Councillor for two terms (1873–1875, 1887–1889).