Keihan Electric Railway Co., Ltd. (京阪電気鉄道株式会社 Keihan Denki Tetsudō Kabushiki-gaisha?) (: ) is a Japanese railway operator in Osaka, Kyoto, and Shiga Prefectures. It is known as "Keihan" (京阪?), "Keihan Dentetsu" (京阪電鉄?) or "Keihan Densha" (京阪電車?).
Keihan started its operation between Osaka and Kyoto in 1910. It was the first electric railway to connect these two cities, and the first line on the left bank of Yodo River. Keihan later purchased the lines in the Ōtsu area (Ōtsu Lines).
In the 1920s, Keihan built another Osaka-Kyoto line through its subsidiary Shinkeihan Railway (新京阪鉄道 Shin-keihan-tetsudō?), which merged into Keihan in 1930. This line is now known as Hankyu Kyoto Line.