| Blue Mountains Grammar School | |
|---|---|
| Location | |
 | |
Australia | |
| Coordinates | 33°42′33″S 150°22′6″E / 33.70917°S 150.36833°E 33°42′12″S 150°34′49″E / 33.70333°S 150.58028°E |
| Information | |
| Type | Independent comprehensive co-educational early learning, primary and secondary day school |
| Motto | Latin: Per Ardua Ad Altiora (Through Effort To Higher Achievement) |
| Denomination | Anglican |
| Established | 1918 |
| Chairman | Costa Zakis |
| Principal | Steven Coote |
| Years | Early learning and K–12 |
| Enrolment | 620 |
| Colour(s) | Blue & gold |
| Website | www |
 | |
Blue Mountains Grammar School, abbreviated as BMGS, is a dual-campus independent Anglican comprehensive co-educational early learning, primary and secondary day school, located in the Blue Mountains suburbs of Wentworth Falls and Valley Heights, New South Wales, Australia. Established in 1918, there are approximately 600 students currently enrolled over both campuses.