Protein-energy malnutrition is common amongst people aged 65 years and older, has a multifactorial aetiology, and numerous negative outcomes. Domiciliary carers (non-clinical paid carers) and family carers (including family, friends and neighbours) are required to support the increasing demand for in-home assistance with activities of daily living due to the ageing population. This review provides insight into the role of both domiciliary and family carers in providing individualised nutrition support for older, community-dwelling adults with malnutrition.