The Bx23 and Q50 bus routes constitute a public transit corridor in New York City, running from the Flushing neighborhood in Queens to the Pelham Bay and Co-op City neighborhoods in the Bronx. The Bx23 provides local service in Pelham Bay and Co-op City, while the Q50 provides limited-stop service between Co-op City and subway hubs in Pelham Bay and Flushing. Both routes are city-operated under the MTA Bus Company brand of MTA Regional Bus Operations, and are the only two local routes in the Bronx to operate under the MTA Bus brand, rather than under the MaBSOTA brand that all other Bronx bus routes operate under.

Whitestone is a residential neighborhood in the northernmost part of the New York City borough of Queens. The neighborhood proper is located between the East River to the north; College Point and Whitestone Expressway to the west; Flushing and 25th Avenue to the south; and Bayside and Francis Lewis Boulevard to the east.