| Tosa-Nagaoka Station | |
| Native Name: | 土佐長岡駅 |
| Native Name Lang: | ja |
| Style: | JR Shikoku |
| Address: | Nishiyama, Nankoku-shi, Kōchi-ken 783-0029 |
| Country: | Japan |
| Operator: | JR Shikoku |
| Line: | Dosan Line |
| Distance: | 114.1 km from |
| Platforms: | 1 side platform |
| Tracks: | 1 |
| Accessible: | Yes - ramp from access road to platform |
| Code: | D39 |
| Status: | unstaffed |
| Passengers: | 82 |
| Pass Year: | FY2019 |
| Map Type: | Japan Kochi Prefecture#Japan |
| Map Dot Label: | Tosa-Nagaoka Station |
is a passenger railway station located in the city of Nankoku, Kōchi Prefecture, Japan. It is operated by JR Shikoku and has the station number "D39".[1]
The station is served by the JR Shikoku Dosan Line and is located 114.1 km from the beginning of the line at .[2]
The station, which is unstaffed, consists of a side platform serving a single track. There is a shelter on the platform for waiting passengers. A ramp leads up to the platform from the access road.[3]
The station opened on 1 May 1952 as a new station on the existing Dosan Line. At that time the station was operated by Japanese National Railways (JNR). With the privatization of JNR on 1 April 1987, control of the station passed to JR Shikoku.