This research examined whether professional mentoring could have a positive effect on the occupational self-efficacy of autistic performing arts professionals. We compared the outcomes of one group who received mentoring to a waitlist control group. 26 participants took part in this study: 15 autistic mentees and 11 mentors, three of whom were also autistic. The mentoring programme was well received and felt to be beneficial by the participating mentees and mentors, particularly regarding gains in mentees' occupational self-efficacy. Professional mentoring also addressed several work-oriented challenges identified by autistic performing arts professionals such as feelings of isolation in the industry and need for consultation and advice on both a professional level, and for mentees with autistic mentors, also a neurodivergent one.