St Peter's College is a state-integrated Catholic co-ed composite College in Palmerston North, New Zealand. It serves approximately 731 students from Year 7 to Year 13. The school's campus includes the historic St Anskar's Chapel, which was given to the school by the Dannevirke Catholic community.

Margaret Leamy is Principal, and the school is divided into a junior school (years 7–10) and a senior school (years 11–13) with each group having a head boy and head girl with the latter being school-representative.

Students and teachers alike are divided into four houses, named after the first four bishops or archbishops of Wellington. The houses compete annually for the House Shield, involving many house led competitions, like Parables (a short drama based on a Biblical parable), House Kapa Haka, House Singing and so on, as well as serving an organisational purpose for the students:

• Redwood (Red) – Named for Francis Redwood.
• Viard (Green) – Named for Philippe Viard.
• O'Shea (Blue) – Named for Thomas O'Shea.
• McKeefry (Yellow) – Named for Cardinal McKeefry.

St Peter's Rugby Union 1st XV plays traditional matches against four other Catholic Schools. The schools are: St John's College, Hastings; Francis Douglas Memorial College, New Plymouth; Cullinane College, Wanganui (formerly St Augustines); and Chanel College, Masterton. Traditional games are played on an annual basis, with home and away legs alternating.

St Peter's College commenced operations in February 1974. It was officially opened on 18 August 1974 by the Prime Minister of New Zealand, Norman Kirk, shortly before his death in office on 31 August. The opening of St Peter's College was Norman Kirk's last public appearance.

The following persons were educated at St. Peter's College, Marist Brother's High School, St. Joseph's High School and St. Patrick's Intermediate, Palmerston North, New Zealand.

• Vaine Greig (born 1991) – New Zealand representative rugby union player.
• Mike McRedmond (born 1958) – cycling coach and former racing cyclist olympian.
• Brian Molloy (botanist) ONZM (1930–2022) – plant ecologist, conservationist, and rugby union player representing New Zealand (Marist Brothers).
• Tim Wilkinson – professional golfer on the PGA Tour
• Simon Power – CEO of TVNZ; former banker, politician, Member of Parliament and cabinet minister.
• Layla Sae (born 2000) – rugby union player.
• Arthur Singe (1898–1936) – rugby league player representing New Zealand in 1925 (Marist Brothers).

• St Peter's College Website
• New Zealand Press Council