AbstractBackgroundAlzheimer’s disease is characterized by deficits in multiple cognitive domains, one being executive function (e.g., planning, inhibition, decision making). Maintaining executive functions is important for autonomy and independence in daily living. Minority stress is linked to cross‐sectional differences in executive function, but less is known about the potential role of minority stress in changes in executive functioning over time.MethodUsing data from the Canadian Longitudinal Study on Aging (CLSA), a large cohort of mid‐aged and older adults, we examined changes in executive function over a 3‐year period. Specifically, we focused on the role of health (e.g., medical conditions, modifiable health behaviors) and minority stress factors (sexual orientation, gender identity, race, and perceived social standing) in explaining these changes. Demographic, health, and minority stress variables were collected at baseline. The Mental Alteration Test (MAT), a cognitive switching task, was administered to measure executive function at baseline (2011‐2015) and follow‐up (2015‐2018). Using the MAT, we computed a reliable change index, accounting for practice effects and variability in scores at follow‐up. Negative scores reflect a more reliable decline in executive function. We used multivariable linear regression and the analytic sample was n = 27,714.ResultOlder age, higher household income, and greater educational attainment predicted reliable declines in executive function. There were no sex differences. Surprisingly, there were also no health factors (e.g., depression symptoms, physical activity levels) or minority stress variables (sexual orientation, gender identity, race, and perceived social standing) that predicted change in executive function.ConclusionAlthough previous cross‐sectional research has established that older minoritized individuals tend to have lower cognitive performance compared to majority peers, minoritized identities do not appear to explain changes in executive function over a short follow‐up period. Additional longitudinal data is needed to understand better the long‐term impact of minority stress on cognitive aging.