Background: The role of participatory health research (PHR) is increasingly acknowledged by funding bodies, researchers and civil society globally; however, it continues to be under-represented in the speech and language therapy (SLT) research literature. This collaborative research approach is associated with the increased application of research evidence, and the generation of positive impacts in practice, policy, health systems and society. Aims: To increase researchers' and other participatory partners' understanding of PHR, and to demonstrate its applicability to research in the SLT field. Methods & Procedures: This aim is achieved through a discussion on PHR, its principles, benefits and challenges, and the evaluation of its impact. A recently developed evaluation framework to support the implementation of best engagement practices is examined, and recommendations for how this framework can be used to plan and evaluate engagement in participatory stuttering research is presented. Main contribution: This paper serves as an important conversation on the value of PHR to SLT research, and presents guidance to support its increased implementation in this research field. Conclusions & Implications: Conclusions & Implications: PHR remains an under-represented research approach in the SLT literature, despite increasing evidence demonstrating its effectiveness and value. It offers a potential solution to the research-practice gap, and challenges the ongoing research hierarchies by democrating the process of knowledge production.