Big Mountain Music Festival

Big Mountain Music Festival (BMMF) is an annual outdoor music festival organized by GMM Grammy, Thailand's largest music company, through its showbiz arm GMM Show, with Ted Yuthana Boonorm as executive producer. It debuted in 2010 and grew from around 20,000 to some 70,000 attendees, and is widely described as Thailand's biggest music festival.

The programme is overwhelmingly Thai, with well over a hundred artists across a dozen or more stages spanning luk thung and mor lam, pop, rock, indie and electronic music. Editions have been held around Khao Yai in Nakhon Ratchasima, most recently at The Ocean Khao Yai and, from 2026 under the Big Mountain Village banner, at Farm Chokchai 3 in Pak Chong.