Fast RMX (stylized as FAST rmx) is a racing video game developed and published by Shin'en Multimedia for the Nintendo Switch. It is a remix of the second installment in Shin'en's Fast series. It was released on March 3, 2017 on the Nintendo eShop as a launch title for the Nintendo Switch. The game includes all the courses and downloadable content from the original game, Fast Racing Neo, in addition to 6 new courses for a total of 30 courses, but with shorter Grand Prix than the original. An additional free update was released on September 13, 2017 which added 6 extra courses, for a total of 36. The game received a limited edition physical release on October 13, 2022, via Super Rare Games.
A sequel, Fast Fusion, was announced as a Nintendo Switch 2 launch title on the April 2, 2025 Nintendo Direct.