| Izu-Nagaoka Station | |
| Native Name: | 伊豆長岡駅 |
| Native Name Lang: | ja |
| Address: | Nanjō 773-2, Izunokuni-shi, Shizuoka-ken |
| Country: | Japan |
| Coordinates: | 35.0398°N 138.9474°W |
| Distance: | from |
| Platforms: | 1 side + 1 island platform |
| Tracks: | 3 |
| Structure: | At grade |
| Code: | IS09 |
| Status: | Staffed |
| Former: | Nanjō (to 1919) |
| Passengers: | 2,444 daily |
| Pass Year: | FY2017 |
| Map Type: | Japan Shizuoka Prefecture#Japan Kanto Chubu Kansai#Japan |
| Map Dot Label: | Izu-Nagaoka Station |
right|thumb|270px|Platforms is a railway station located in the city of Izunokuni, Shizuoka Prefecture, Japan operated by the private railroad company Izuhakone Railway. It is located in the former town of Nirayama.
Izu-Nagaoka Station is served by the Sunzu Line, and is located 11.4 kilometers from the starting point of the line at Mishima Station.
The station has one side platform and one island platform connected to the station building by a footbridge. However, only the island platform serving tracks 2 and 3 is in normal use for passenger traffic, and is used for bidirectional traffic for both normal and express services. The station building has automatic ticket machines, a staffed service counter and shops.
Izu-Nagaoka Station was opened on May 20, 1898 as as the terminal station for the first phase of construction of the Sunzu Line. The line was extended onwards to Ōhito on July 17, 1899. The station was given its present name on May 25, 1919. The station building was rebuilt in 1986.
In fiscal 2017, the station was used by an average of 2444 passengers daily (boarding passengers only).[1]