The assumption of heterosexuality in supervision

•Assumption ‘still’ of heterosexuality within clinical and academic/training contexts.•Author's own experience as psychotherapist, clinical supervisor and educator.•Evidence of heterosexism in various UK studies.•How we as supervisors can have a more diverse attitude within art therapy supervision.

It is the author's experience that clinical supervision tends to assume heterosexuality unless specifically identified otherwise. Discussed is that art therapy supervisors and supervisees should be alert to the implications of heterosexism for themselves and their clients. Further that it is necessary to hold in mind our identity as pertaining not only to our sexual orientation but to all that makes up our identity.