In Sweden, transgender (in short “trans”) activism is not a new phenomenon, however it is unclear exactly how long it has been conducted, where some believe that it has existed long before its relatively new visibility. The trans activist movement has extensive knowledge of the situation for trans people and works actively to conduct knowledge-enhancing initiatives in Sweden, including training for staff in human service organizations. Previous studies show that knowledge about trans issues among social workers is limited and that the treatment of trans people is deficient. This study, therefore, examines what social work can learn from Swedish trans activism, to acknowledge and meet potential needs among older trans individuals. The study is based on in-depth qualitative interviews with seven Swedish trans activists and the collected material was analyzed using the content analysis method. The analysis is structured around three themes: (1) Trans activism: Why and How?, (2) Societal Context: Politics and Knowledge, and (3) Development and change: The Rights of Older Trans Adults. The results indicate that a lack of knowledge about the needs and rights of older trans adults issues can counteract or complicate positive change in this area. What factors that drive change are concluded to increased visibility and knowledge through advocacy work that takes place in the form of education and training. Implications for social work are suggested as identifying the own room for manoeuvre as well as a need for self-reflexivity and norm-critical approaches. Future research is recommended with a larger sample where activists that are not connected to the larger trans organizations in Sweden are to be included to a higher degree.