Abstract Introduction An ageing population globally has created an escalating demand for age-attuned healthcare services. Most older adults will continue to receive their medical care from doctors without specialised geriatric medicine training. It is important therefore that all doctors possess fundamental gerontological competencies. Which specific competencies and how they might best be integrated into medical education remain unclear. Our aim was to summarise the literature on the geriatric medical competencies required by all doctors caring for older adults. Methods We undertook a scoping review following Arksey and O’Malley and the Preferred Reporting Items for Systematic Reviews and Meta-Analysis extension for scoping reviews (PRISMA-ScR). We systematically searched the electronic databases PubMed, Cochrane, Cinahl, PsycInfo, ERIC and Embase for eligible records from January 2012 to December 2022. Studies related to physician or doctor or resident and competencies or curriculum or education and geriatric medicine or gerontology were included. We also searched the websites of included countries’ medical specialty professional bodies for relevant competency frameworks. Results Eighty-seven sources were included in the review. The most common competencies identified were medication management, recognition and management of cognitive impairment and management of chronic disease and co-morbidities. Considerable heterogeneity existed among the remaining competencies identified including interprofessional communication skills, advanced care planning and discharge planning. Competencies addressing subspecialty areas including stroke, orthogeriatrics, movement disorders were less prominent. Conclusion Multiple attempts to create and implement competency frameworks on local, national, and international levels in addition to educational interventions to address competency gaps locally reflect the wide-ranging challenges faced by healthcare systems in caring for an ageing population. Significant variation in competencies exists among the sources included in this scoping review. An overarching competency framework is now necessary to define the required competencies for all hospital doctors caring for older adults.