Full-text article. Also available at https://doi.org/10.3390/su12030921Despite the increase in forest areas and villages under the participatory program over the last two decades in Tanzania, there is little insight into the communities’ views regarding their participation. This study aimed to explore communities’ participation in the participatory forest program in Tanzania. The survey involved 159 households, randomly sampled from four villages bordering state and community-managed forests, in West Usambara Mountains. The factor analysis summarised three components of participation. Economic, decision-making, and protection activities are used to formulate the participation intensity index. The study observed significantly higher levels and intensity of participation in the villages around the state compared to those around the community forest. Training attendance, trust on institutions, and location were significant predictors of participation intensity of the households. In conclusion, the perceived performance of the participatory programs in achieving the participation aims has been moderate with better results in the state forest jointly managed with the community. Raising awareness and improving communication with villagers, fulfilling promises for the communities, and the provision of more forest-linked interventions are recommended to improve the situation in West Usambara.