The Tōbu Ogose Line (東武越生線, Tōbu Ogose-sen^?) is a 10.9 km mostly single-track branchline in Saitama Prefecture, Japan, which runs from Sakado Station on the Tōbu Tōjō Line to Ogose Station, connecting with the JR East Hachikō Line.

Service today consists of four trains per hour in each direction during the daytime, increased to five trains per hour in the morning and evening peak periods. Trains are formed of 4-car 8000 series EMUs. 7800 series EMUs were used up until 1985, 5000 series EMUs were used until 1990, and 10030 series EMUs were also used alongside the 8000 series trains until the start of driver-only operation in June 2008.

The line first opened as a freight line between Sakado and the Komagawa River (later Morito Station (森戸駅^?)) on 17 February 1932. The line was extended from Morito to Ogose on 16 December 1934, from which date passenger services also commenced. The line was electrified in July 1950 at 1,500 V DC.

Through trains to and from Ikebukuro and Kawagoeshi on the Tōjō Line operated until the 1970s. Between 1996 and 2003, a special direct Ogose Kanbai train was operated between Ikebukuro and Ogose on certain weekends in February during the ume blossom viewing season. This train initially ran non-stop from Ikebukuro to Ogose (with a driver change at Sakado), but, in subsequent years, included stops at Asakadai and Kawagoe. From 2004 onward, regular scheduled trains on the Ogose Line were decorated with an Ogose Kanbai headboard for one day during March.