List of York Region Transit and Viva bus routes

This is a list of York Region Transit and Viva Rapid Transit bus routes in York Region, north of Toronto, Canada. The routes are divided into branch routes.

Routes Route information effective .

Numbering conventions 1 to 199 — Regular bus (including Toronto Transit Commission (TTC) contracted routes) 300 series — Express 400 series — High school specials 500 series — Community bus 600 series — Viva (used internally)

Separate routes with duplicate names are distinguished by showing cardinal directions in brackets for the portions of the streets each serves.