Diversity training for health professionals in South Africa has traditionally been conceptualized as differences in gender, race or ethnicity, culture and sexual orientation. More recently physical disability and mental illness was included as a dimension. Intellectual disabilities received lip service as a diversity concern. This paper reports on health professionals' perceptions of the extent to which diversity training prepared them to competently deal with intellectual disabilities. This explorative study included a purposive sample of 18 health care professionals experienced in intellectual disability services. Two focus groups were facilitated over three sessions. Transcripts were analysed thematically. Health professionals felt inadequately prepared to consider intellectual disabilities as a diversity issue. They could not effectively advocate for reasonable accommodation. There was a differential familiarity with issues related to diversity and intellectual disability with profession constituting an additional intersecting dimension of diversity. Health professions did not perceive their diversity training to prepare them to deal competently with intellectual disabilities.