Bosner Island is an Antarctic rocky island, 0.6 km (0.3 nmi) long, lying 0.19 km (0.1 nmi) northwest of Boffa Island and half a kilometre east of Browning Peninsula in the south part of the Windmill Islands. It was first mapped from air photos taken by USN Operation Highjump and Operation Windmill in 1947 and 1948. Named by the US-ACAN for Paul Bosner, member of one of the two Operation Windmill photographic units which obtained aerial and ground photos of the area in January 1948.

• Composite Antarctic Gazetteer
• List of Antarctic and sub-Antarctic islands
• List of Antarctic islands south of 60° S
• SCAR
• Territorial claims in Antarctica

 This article incorporates public domain material from "Bosner Island". Geographic Names Information System. United States Geological Survey.