Matthew Snyder scored the lone goal for the Orioles, with an assist from Brayden Porter. Ludington outshot the Tigers 16-3.
The Orioles, 11-9-3 on the season, have now won three district titles in a row and six out of the last seven. They advanced all the way to the state finals in 2017 and the state semifinals last year.
Shelby finished the season with a 14-10-1 record.