圣彼得港（Saint Peter Port），为英国领地根西岛的首府。2011年人口16,488。

Saint Peter Port is the capital of Guernsey as well as the main port. The population in 2001 was 16,488. In Guernésiais and in French, historically the official language of Guernsey, the name of the town and its surrounding parish is St Pierre Port. The "port" distinguishes this parish from Saint Pierre Du Bois.