William Welsh (November 22, 1822 – June 22, 1905) was a merchant, ship owner and politician in Prince Edward Island.
Welsh represented 4th Queens in the Legislative Assembly of Prince Edward Island from 1873 to 1878 as a Liberal member.
He was born on Prince Edward Island, the son of Charles Welsh, and educated in Charlottetown.
He was a justice of the peace and served in the local militia, reaching the rank of major.
This article about a Prince Edward Island politician is a stub.