B103 (New York City bus)

b103
Downtown Brooklyn-Canarsie Line Avenue H/Avenue M Line
A 2011 C40LF (492) on the Canarsie-bound B103 Limited at Fulton/Joralemon/Adams Streets & Boerum Place in July 2018
Overview
System	MTA Regional Bus Operations
Operator	MTA Bus Company
Garage	Spring Creek Depot
Vehicle	New Flyer C40LF CNG
Began service	June 16, 1986
Route
Locale	Brooklyn, New York, U.S.
Communities served	Downtown Brooklyn, Boerum Hill, Windsor Terrace, Kensington, Flatbush, Flatlands, Canarsie
Start	Downtown Brooklyn - Cadman Plaza West & Tillary Street
Via	Third Avenue (northbound), Fourth Avenue (southbound), Prospect Expressway, Avenue H, Avenue M
End	Canarsie – Williams Avenue & Flatlands Avenue
Length	11.9 miles (19.2 km)
Other routes	BM2 Canarsie/Spring Creek/Midtown/Downtown
Service
Operates	5:30 AM - 2:30 AM
Annual patronage	2,330,244 (2023)[1]
Transfers	Yes
Timetable	B103
Route map ← B100  {{{system_nav}}}  B110 →

The B103 constitutes a bus route in the New York City borough of Brooklyn. Originally operated by Command Bus Company, the bus route is now operated by MTA Bus Company, running between Downtown Brooklyn and Canarsie.