Our goal was to systematically identify, appraise and synthesise the qualitative research on parents' experiences of the autism assessment process. The empirical studies were quality appraised using the Critical Appraisal Skills Programme tool. We synthesised the data using a meta-synthesis approach. Parents' experiences were categorised into four phases namely: the pre-identification phase, the identification process, emotional reactions to the identification of the children as autistic and the post-identification phase. Informed by the social and human rights discourse on disability, we provide recommendations for future research, respecting the rights of all concerned. We discuss the implications of this review for future research into the autism assessment process. Parents consistently mentioned the importance of professional communication and we make recommendations for research on parent-professional partnerships. Given the sensitivities of the issues, we draw attention to ethical considerations when conducting research on the autism assessment process. Finally, we address the strategies that professionals can adopt in applying neurodiversity-affirmative approaches when identifying autistic children and supporting their parents.