Dr. LEUNG Tong-Lit, CharlesCharlesDr. LEUNG Tong-LitDr. MO Yuen-han, KittyKittyDr. MO Yuen-hanProf. CHOW Oi-Wah, EstherEstherProf. CHOW Oi-Wah2026-02-232026-02-232026Asia Pacific Journal of Social Work and Development, 2026.2994-97692165-0993http://hdl.handle.net/20.500.11861/26794As rapid demographic ageing reshapes the region, cross-border retirement in the Guangdong-Hong Kong-Macao Greater Bay Area has emerged as a strategic priority. Adopting a ‘retirement mobilities’ framework, this scoping review synthesises 18 studies (2006–2024) to examine this transition. Our analysis reveals a critical paradigm shift: While financial portability barriers have been largely resolved, challenges have migrated towards care system compatibility, specifically impacting frail older adults concerned with medical quality. A gap persists between policy incentives and retiree uptake. Notably, the GBA case illuminates four key non-monetary challenges – digital exclusion, social isolation, cultural dissonance, and institutional mistrust – that carry vital lessons for ASEAN and the broader Asia-Pacific as they seek to support cross-border retirees. Ultimately, sustainable ‘ageing across places’ requires service integration beyond mere monetary transfers.enASEANCross-Border RetirementGuangdong-Hong Kong-Macao Greater Bay AreaRetirement MobilitiesScoping ReviewPeer Reviewed Journal Article10.1080/29949769.2026.2628648