London Buses route 109 is a Transport for London contracted bus route in London, England. Running between Croydon and Brixton station, it is operated by Transport UK London Bus.

Brixton is a London Underground station on Brixton Road in Brixton in the London Borough of Lambeth, South London. The station is the southern terminus of the Victoria line. The station is known to have the largest London Underground roundel on the network. The next station is Stockwell.