St Peter's (Guernesiais: Saint Pierre), known officially as Saint Pierre du Bois (English: "St. Peter in the Wood"), is a parish in Guernsey. It is the centre for the Guernsey Western Parishes which includes Torteval, St Saviour's and the Forest.

The old Guernesiais nickname for people from Saint Pierre was etcherbaots which means beetles.

The postal code for street addresses in this parish begins with GY7.

St Peter's won the Britain in Bloom small coastal prize in 2015.^[1] and a gold medal in the 2016 Champion of Champions competition.^[2]

The parish is located in the West of the Island and has borders with the parishes of Torteval, St. Saviour's, Forest and St. Andrew's.

The parish is mainly countryside with a small village in the centre. The parish church is one of the most unusual in the islands as it is built at the bottom of a small valley and the interior of the church is not flat but diagonal in appearance.

Residents of Saint Peter vote in the Island wide voting for deputies, the last election was the 2020 Guernsey general election.

• Sampson Avard, the leader of a band of Mormon vigilantes called the Danites, which existed in Missouri during the period of the 1838 Mormon War.
• Harry Lewis, also known as W2S and is a member of the Sidemen.