Billa Flint (February 9, 1805 – June 15, 1894) was a businessman and political figure in Ontario.

He was born in Elizabethtown (later Brockville) in Upper Canada and dropped out of school after six weeks to work for his father as a clerk.

In 1829, unhappy with the sale of liquor at his father's hotel, he moved to Belleville and set up his own business there.

In 1863, he was elected to the Legislative Council for Trent division and served until Confederation when he was appointed to the Senate.

Flint wrote a series of articles about the early days of Belleville which were published in the newspapers of the time.