- MASASI FARMERS AND MARKETING ASSOCIATION
- Masasi Non-governmental Organization Network
- MASASI PEOPLE LIVING WITH HIV/AIDS GROUPS NETWORK
- MASASI SPORTS AND FARMING ASSOCIATION
- MASASI YOUTH DEVELOPMENT GROUPS NETWORK
- MCHICHIRA SHANGANI ASSOCIATION
- Mpotola Secondary School
- Mtandao wa Kitaifa kwa maendeleo ya Afya, huduma na uegemezi wa watu waisio na VVU (SHDEPHA+)
- MTWARA SOCIETY AGAINST POVERTY
- Mtwara Action For Self Help Activities (MASHA)