Railway Technical Research Institute
| Abbreviation | RTRI |
|---|---|
| Formation | 10 December 1986 |
| Legal status | Public Interest Incorporated Foundation |
| Purpose | Railway technology research and consulting |
| Headquarters | 2-8-38, Hikaricho, Kokubunji-shi, Tokyo |
Region served | Japan |
| Leader | Masao Mukaidono (chair) |
| Affiliations | Japan Railways Group |
| Budget | ¥15.3 billion (FY 2009) |
| Staff | 512 (as of 1 October 2008) |
| Website | rtri.or.jp |
Railway Technical Research Institute (鉄道総合技術研究所, Tetsudō Sōgō Gijutsu Kenkyūsho), or RTRI (鉄道総研, Tetsudō Sōken), is the technical research company under the Japan Railways group of companies.