Charles Avila Séguin (August 7, 1883 – December 9, 1965) was an Ontario lawyer and political figure.

He represented Russell in the Legislative Assembly of Ontario as a Conservative member from 1929 to 1934.

Charles Avila Séguin was born in Montreal, Quebec, on August 7, 1883, and studied at the University of Ottawa and Osgoode Hall Law School.

[1] In 1912, he married Germaine, the daughter of Wilfrid Bruno Nantel, who was a federal cabinet minister.

In 1940, Séguin ran unsuccessfully for a seat in the House of Commons in Ottawa East.