George Oscar Alcorn KC (May 3, 1850 – February 16, 1930) was a Canadian lawyer and politician.

[2] Born in Lennoxville, Canada East, (now Sherbrooke, Quebec),[2] the son of Thomas Coke Alcorn and Martha A. Bartlett, he was educated at the Toronto Grammar and Model Grammar Schools.

A lawyer, he was admitted to the bar in 1871 and was created a King's Counsel in 1890.

He was president of the Prince Edward Liberal-Conservative Association.

In 1910, Alcorn was named Master in Ordinary for the Supreme Court of Ontario and served in that post until 1923.