Pirbright (/pɜːrbraɪt/ [needs stress]) is a village in Surrey, England. Pirbright is in the borough of Guildford and has a civil parish council covering the traditional boundaries of the area. Pirbright contains one buffered sub-locality, Stanford Common near the nation's farm animal disease research institute. The village's grade II* listed medieval church has a large Boulder grave for explorer Henry Morton Stanley. The nearby Hodge Brook is marked as Congo Stream, between Ruwenzori and Stanley Hills.