John Fitzgerald Clarke (July 16, 1827 – April 19, 1887) was an Ontario physician and political figure.

He represented Norfolk North in the Legislative Assembly of Ontario from 1871 to 1879.

He was born in Coventry, England in 1827, the son of a Congregational minister who was sent to Upper Canada as a missionary in 1837.

Clarke was editor and owner of the Long Point Advocate.

This article about an Ontario Liberal Party MPP is a stub.