Sesilia Shirima is a feminist, gender expert, and clinician from Tanzania. She is passionately involved in advocating for Sexual Reproductive Health and Rights with ten years of experience. Her work has included service delivery, community work, advocacy, leadership, and facilitation. Sesilia holds a Degree in Gender and Development and she possesses a High Diploma in Clinical Medicine. She is award winner of 2022 ICFP youth trailblazer in Family planning and 2021 World Women Leadership Congress & Awards in Presents Africa's Women Leaders and 2024 East Africa Thematic Leadership Journey Cohort at women lift 2024/2025

She is currently the Chief Executive Officer of the Young and Alive Initiative, the organization that aims to mobilize adolescents and youth to be solid and supportive to Sexual Reproductive Health Rights and Justice systems. Sesilia is also an active member of various women and young people's movements, such as Women Human Right Defender Tanzania, Tanzania Feminist Forum, DADA rise, Women Directors Forum and East Africa feminist forum.