The Keisei Oshiage Line (京成押上線, Keisei-Oshiage-sen) is a railway line in Tokyo, Japan, operated by private railway company Keisei Electric Railway.

The Oshiage Line passes through areas typical of Tokyo's shitamachi ("down town") working-class sections known for their distinctively earthy atmosphere.

The following types of service operate on the line.

The line was regauged to 1,435 mm in 1959 in preparation for the introduction of through services upon the opening of Tokyo Metropolitan Bureau of Transport (Toei) Line 1 (present Toei Asakusa Line) on 4 December 1960, when the line returned to its original role in the Keisei network, to provide trains from its main line to downtown Tokyo via the Toei line.

[1] It also provides connections at Oshiage to the Tobu Skytree Line and the Tokyo Metro Hanzōmon Line.