Pirbright 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. Explorer Henry Morton Stanley has his imposing boulder grave at the end of the grounds of the grade II* listed medieval church. The nearby Hodge Brook is marked as Congo Stream, between Ruwenzori and Stanley Hills.