Charles-Adolphe Stein, KC (August 1, 1878 – February 27, 1938) was a Quebec politician, lawyer and judge. He was born in Quebec City to immigration agent Léonce Stein and Alma Baillairgé. Stein studied at the Quebec Seminary and at Laval University where he studied law and received the Governor General's Academic Medal in 1902. He was admitted to the Quebec bar that same year and became King's Counsel in 1912.