Objective: To describe the construction aboutthe (lack of) knowledge and stigma of leprosy by Community Health Workers participating in the Culture Circle. Method: Qualitative, action-research type study supported by the Paulo Freire Culture Circle framework, carried out with 21 Community Health Workers. Data collected in November 2021, in the municipality of São Luís, Maranhão. The following categories were evidenced: knowledge about leprosy, signs and symptoms, stigma. Results: The participants had knowledge about the disease, but they verbalized people’s disinformation about leprosy, disbelief in relation to the cure, and situations of prejudice and stigma that are still present today. Final considerations: The culture circle enabled the intertwining of scientific and empirical knowledge in the construction of a critical and reflective knowledge committed to welcoming and comprehensive care for people and families affected by leprosy.