The majority of adolescent girls in rural India lack awareness regarding menstrual hygiene management (MHM), access to sanitary absorbents and necessary facilities in schools, homes, and workplaces. This study evaluated an intervention to strengthen a public health programme aimed to increase the use of safe, sanitary absorbents and knowledge of MHM among tribal adolescent girls. This project was implemented in 202 villages of two sub-districts of Narmada district in Gujarat, India, for one year (2018–2019). The intervention consisted of capacity building of 892 government frontline health workers and teachers, followed by supportive supervision. Convergence with concerned departments was achieved through meetings with stakeholders. “MHM-corners” and “MHM-Committees” were created at schools and Anganwadi-centres to improve access to menstrual absorbents and information. Household surveys of adolescent girls were conducted at baseline ( n = 507) and end-line ( n = 550) in 27 randomly selected villages to evaluate outcomes. Of 550 girls at the end-line, mean age 16.3 years, 487 (88.5%) were tribal, and 243 (44%) were out-of-school. The primary outcome of interest, the proportion of adolescent girls using safe, sanitary absorbents, increased from 69% to 90.5% (OR: 5.19, CI: 3.61–7.47). Their knowledge of the uterus as the origin of menstrual blood and hormonal changes as the cause for menstruation improved from 6.3% to 66% ( p -value < 0.001) and 7.5% to 73% ( p -value < 0.001), respectively. School absenteeism during menstruation reduced from 24% to 14% ( p -value < 0.001). It is possible to improve MHM knowledge and practices among adolescent girls from tribal communities by utilising existing government systems. Awareness and access to safe absorbents can lead to safe and hygienic MHM practices.