Joseph Keeler (May 24, 1824 – January 21, 1881) was an Ontario businessman and political figure. He represented Northumberland East in the House of Commons of Canada as a Liberal-Conservative member from 1867 to 1874 and from 1879 to 1881. On October 12, 1848, he married Octavia Phillips. Keeler died in office in Ottawa at the age of 56. His father, Joseph Abbott Keeler, was credited with being the founder of Colborne and his grandfather, a United Empire Loyalist from Vermont also named Joseph Keeler, was one of the first settlers in the township.