Bolliger & Mabillard

Bolliger & Mabillard, officially Bolliger & Mabillard Consulting Engineers, Inc. and often abbreviated B&M, is a roller coaster design consultancy based in Monthey, Switzerland. The company was founded in 1988 by engineers Walter Bolliger and Claude Mabillard, both of whom had worked for Giovanola.

B&M has pioneered several new ride technologies, most notably the inverted roller coaster and the box-section track. In 2016, the company completed its 100th roller coaster. B&M currently produces ten types of coaster models: Stand-Up Coaster, Inverted Coaster, Floorless Coaster, Flying Coaster, Hyper Coaster, Dive Coaster, Sitting Coaster, Wing Coaster, Family Coaster, and most recently, the Surf Coaster. Though B&M has not used the term, the company has also manufactured three giga coasters.