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 five regular bus routes which operate every half-hour on Routes 1, 2, 3 & 4 and once an hour on Route 5, Monday through Wednesday from 7 am to 7 pm and on Thursday and Friday from 7 am to 10 pm.

On the weekend the frequency on all routes is hourly and the buses run on Saturday from 8 am to 6 pm and Sunday from noon to 6 pm.

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