Background Mealtimes are embedded routines of residents living in residential aged care facilities (RACFs) that directly impact their health and quality of life. Little is known about how mealtime experiences are informed and affected by structures such as government and organisational policies and processes. This scoping review used Giddens’ (The constitution of society: outline of the theory of structuration, 1984) Structuration Theory to investigate how governance structures related to mealtime practices inform residents’ mealtime experiences. Methods Using Arksey and O’Malley’s (Int J Soc Res Methodol 8:19–32, 2005) scoping review framework, a systematic database, grey literature and policy search was completed in May 2020 and updated in July 2021. From 2725 identified articles, 137 articles were included in data charting and deductive analysis, and 76 additional Australian government policy papers were used interpretatively. Results Data charting identified that the included studies were prominently situated in Western countries, with a progressive increase in publication rate over the past two decades. Qualitative findings captured structures that guide RACF mealtimes, how these relate to person-centred mealtime practices, and how these facilitate residents to enact choice and control. Conclusions Current policies lack specificity to inform the specific structures and practices of RACF mealtimes. Staff, residents, organisational and governance representatives possess different signification, legitimation and domination structures, and lack a shared understanding of policy, and how this influences processes and practices that comprise mealtimes.