The Drummondville Transit Commission (la Commission de transport de Drummondville (CTD)) is responsible for public transportation in the city of Drummondville in the Centre-du-Québec region of Quebec, Canada.

The system consists of six regular bus routes (1-6) which operate every half-hour on weekdays and every half-hour on weekends, and two weekend-only bus routes that operate every half-hour.

All routes operate out of the main downtown bus terminal at Des Forges and Lindsay Streets.