Viva Orange is a line on the Viva bus rapid transit system in York Region, Ontario, Canada. The route primarily runs in an east–west direction along the Highway 7 Rapidway in Vaughan. It is operated by Tok Transit under contract from York Region.

Viva Orange runs mostly along Highway 7, between Martin Grove Road and Richmond Hill Centre Terminal on Yonge Street. A section of the route also runs on Centre Street and Bathurst Street to service the Promenade Terminal. The route connects with the Toronto subway's Line 1 Yonge–University at Vaughan Metropolitan Centre station.

There are 17 stations currently in operation.

Viva Orange shares routing with Brampton Transit's 501 Züm Queen express bus route between Martin Grove and Vaughan Metropolitan Centre (VMC), and has been fare integrated with it since its creation in September 2010. Both Brampton Transit and York Region Transit proofs of payment are accepted for the entire length of both bus routes.

Viva Orange connects with the TTC subway at VMC station. There are currently free transfers between TTC and YRT routes for customers paying by Presto card.

Viva Orange originally began service on October 16, 2005 and operated between Martin Grove Road on Highway 7 and Sheppard West subway station via York University. On December 17, 2017 the Line 1 Yonge–University extension opened and replaced service between Sheppard West and Highway 7. Viva Orange's eastern terminus was relocated to the Richmond Hill Centre Terminal to coincide with the subway's opening.

There are plans to extend the western terminus to Highway 50 with additional stops at Highway 427 and Highway 27. There are also plans to add an additional branch at the eastern terminus between Promenade Terminal and Finch station.

Viva Orange operates along dedicated right of way (dubbed Rapidways) between Wigwoss–Helen and Richmond Hill Centre Terminal. Eventually, the entire Highway 7 Corridor could be upgraded to light rail transit.