MMHS

MMHS can refer to several things:


 * Machias Memorial High School
 * Manchester Memorial High School
 * Maple Mountain High School (Utah)
 * Mardela Middle and High School
 * Matthew Moss High School
 * Morton Memorial Schools, at the Indiana Soldiers' and Sailors' Children's Home
 * Mount Miguel High School
 * Military Message Handling System
 * Milliken Mills High School
 * Minto Memorial High School
 * Mira Mesa Senior High School
 * Mundy's Mill High School
 * Murdock Middle/High School
 * Murrieta Mesa High School