C (AC Transit)

C
Overview
Operator	Key System (1906–1960) AC Transit (1960–2020)
Began service	1903 (1903)
Ended service	2020
Route
Locale	Oakland, San Francisco
Start	Highland Ave. & Highland Way
Via	Moraga, Piedmont, 40th
End	Salesforce Transit Center
Map	C
Route map ← B  List of AC Transit routes  D →

The C was a bus service operated by AC Transit in the San Francisco Bay Area. It is one of the operator's many transbay routes, which are intended to provide riders a long-distance service across the San Francisco Bay between the East Bay and San Francisco. The service was descendant of a Key System streetcar and ferry line that operated prior to the formation of AC Transit. The line was suspended in response to the COVID-19 pandemic.