The Tsurugi (つるぎ) was a limited express overnight "Blue Train" sleeping car train service operated by Japanese National Railways (JNR) and later by West Japan Railway Company (JR West) in Japan from 1961 until 1994. It was named after the Mount Tsurugi. The name is scheduled to be used for Hokuriku Shinkansen train services from 2015.
The Tsurugi services operated overnight between Osaka and Toyama.
The Tsurugi service was first introduced on 1 October 1961 as a limited express service operating between Kanazawa and Nagaoka.
Regular Tsurugi services were discontinued from the start of the revised timetable on 4 December 1994.
With the opening of the Hokuriku Shinkansen extension beyond Nagano to Kanazawa in 2015, the Tsurugi name will be used for shuttle services operating between Toyama and Kanazawa.