Sady D. Courville (November 15, 1905 – January 3, 1988),[1] was a Cajun fiddler noted for his extensive collaboration with Dennis McGee.

[2] In his early teens he bought his first fiddle and started learning from his father and Dennis McGee.

[2] By the time he was 16, he was playing dances with Amédé Ardoin around Chataignier and Faiquitaique.

He decided to take a hiatus from music around this time due to the stress.

[2] Courville died on January 3, 1988[1] in Eunice, Louisiana.