Tosa-Otsu

Weekday departures: 78/day · Sat & holiday departures: 78/day

First / last departure (weekday): 5:54 / 22:58

Busiest hour: 16:00–17:00 (7)

0:00 ─ 23:00

Figures are typical departures in the timetable data, not a live service count.

Timetable data as of 2 May 2026.

• Dosan Line: Gomen ⇄ Nunoshida

Tosa-Ōtsu Station opened on 5 December 1925 as an intermediate stop on the then Kōchi Line (now the Dosan Line), when the line was extended eastwards from Kōchi and then northwards. The station handled both passenger and freight traffic in its early decades. Freight wagons ceased on 28 June 1960, parcels delivery in 1969, and remaining small-lot freight in June 1970, after which the station became unstaffed in October 1970. With the privatisation of Japanese National Railways on 1 April 1987 control passed to JR Shikoku, which assigned station number D41.

Although it is a JR Shikoku stop, all Asa Line rapid trains and some local services from the third-sector Tosa Kuroshio Railway run through on Dosan Line tracks, with Tosa-Ōtsu as one of their intermediate halts.