Burnham Grammar School (BGS) is a co-educational grammar school in Burnham, Buckinghamshire. In October 2011 the school became an academy. It takes students aged 11–18, with approximately 1250 on roll (as of 2021/2022). In September 2004 the Department for Education and Skills (DfES) awarded the school specialist school status as a science college. In May 2011 the school applied for academy status in order to be released from local education authority (LEA) control. The school has a vertical tutoring system. The current headteacher is Andrew Gillespie, who took over from Catherine Long in January 2008. Previous to this, he was a teacher of science at the school.

Notable alumni