GPHS

GPHS can mean:

Schools
Australia:
 * Glenmore Park High School, a co-educational, comprehensive government high school in Glenmore Park, New South Wales

Canada:
 * Grant Park High School, in Winnipeg, Manitoba, Canada

The Philippines:
 * Gregorio Perfecto High School, in Manila, Philippines

United States:
 * Gage Park High School, in Chicago, Illinois
 * Galena Park High School in Galena Park, Texas (Houston area)
 * Gatlinburg-Pittman High School, in Gatlinburg, Tennessee
 * Glacier Peak High School, in Snohomish, Washington
 * Gwynn Park High School, in Brandywine CDP, Prince George's County, Maryland (Washington, DC area)

Other

 * General Purpose Heat Source, a radioisotope source used in space power generation