Peninsula Grammar, formerly The Peninsula School, is an Australian private, co-educational, Anglican, day and boarding school located in Mount Eliza, Victoria.

Founded in 1961, originally as a boys-only school, Peninsula Grammar began enrolling girls from 1994. It is a member of the Associated Grammar Schools of Victoria. The school has a non-selective enrolment policy and caters for approximately 1,190 students from Kindergarten to Year 12. Co-educational from 1994 and an Anglican school, Peninsula's chaplain for twenty-four years (1974–1998) – the Rev. John Leaver – initiated the founding of several other similar Anglican or Ecumenical co-educational schools in Victoria.

In addition to catering for the boarding of international students (notably from China, South Korea and Vietnam), Peninsula Grammar operates multiple overseas campuses, largely in South East Asia.

Peninsula Grammar is a member of the Associated Grammar Schools of Victoria (AGSV).

Peninsula Grammar has won the following AGSV and AGSV/APS premierships.

Boys:

Girls: