The 33 Forest Hill bus route operates between St. Clair West Station on the Yonge-University-Spadina Subway and the area of Spadina Road and Eglinton Avenue West, generally in a north-south direction. Accessible service is provided on the route. Bike racks are available on this route.

One single service is operated:  the 33 (St Clair West Stn-Eglinton) branch operates during the peak periods and midday, from Monday to Friday only.

Northbound “33 TO EGLINTON” buses operate from St. Clair West Station via east on St. Clair Avenue West, north on Spadina Road, east on Eglinton Avenue West, and west on Chaplin Crescent to Roselawn Avenue.

Southbound “33 TO ST CLAIR W STN” buses operate from Chaplin Crescent and Roselawn Avenue via west on Roselawn Avenue, south on Bathurst Street, east on Eglinton Avenue West, south on Spadina Road, and west on St. Clair Avenue West to St. Clair West Station.

All buses on the route serve local bus stops along the route.