Sangū Express Electric Railway (参宮急行電鉄, Sangū Kyūkō Dentetsu), usually abbreviated as Sankyū (参急), was a private railway company that operated in Nara Prefecture and Mie Prefecture, Japan for 14 years from 1927 to 1941, when it merged with its parent company, Ōsaka Electric Railroad (Daiki).
These lines extended northwards from Matsusaka through cities in Mie Prefecture along the coast of Ise Bay as far as Kuwana.
The word "Sangū" is a kanji abbreviation of a phrase in Japanese that roughly translates to "a pilgrimage to Ise Grand Shrine".
When Sankyū acquired Iseden, it then set its eyes on a direct connection between Osaka and Nagoya.
Sankyū only built one train line which served as the second half of a railway linking Osaka and Ise Grand Shrine.