The Wok Bung Wantaim (WBW) strategy was a health system strengthening intervention implemented in Hela Province and Southern Highlands Province (SHP) of Papua New Guinea (PNG). It was initiated by the Oil Search Foundation (OSF) and co-funded by the Government of PNG (GoPNG), Government of Australia, and OSF. DFAT’s grant allocation was initially AUD 7.4 million, but this was reduced to AUD 4.6 million in 2019. The grant was originally managed as part of the PNG Partnership Fund (PPF), and more recently by the PNG–Australia Transition to Health (PATH) program. The project ended on 30 June 2021.