Primary care providers are the main point of contact with the healthcare system for individuals with intellectual disability, and they may have pre-existing attitudes towards this group that impacts care. We examined whether participants' gender, age, professional status and experience with individuals with intellectual disability were associated with attitudes by surveying 95 family physicians, family medicine trainees and advanced practice nursing students across a Canadian province. Younger participants were more likely to feel that those with intellectual disability are similar to themselves and that individuals with intellectual disability should be empowered to take control of their lives. Older participants were more likely to believe that individuals with intellectual disability are vulnerable. These findings suggest there may be a generational difference in attitudes, and educational interventions may be needed to ameliorate attitudes among older primary care providers to reduce the impact of pre-existing attitudes on the provision of care.