Mesen or Masen or Mesan or Mosan or Masan may refer to:

• Mesen, Chaharmahal and Bakhtiari (مسن - Mesen)
• Mesan, East Azerbaijan (مسن - Mesan)
• Mesen, Hormozgan (مسن - Mesen)
• Masan, Kurdistan (ماسان - Māsān)
• Masen (ماسن - Māsen), South Khorasan Province

The Movement for the Social Evolution of Black Africa (, MESAN) was a political party in the Central African Republic. In its original form, it was nationalist quasi-religious party that sought to affirm black humanity and advocated for the independence of Ubangi-Shari, then a French colonial territory.

Mesen or Masen or Mesan or Mosan or Masan may refer to:

• Mesen, Chaharmahal and Bakhtiari (مسن - Mesen)
• Mesan, East Azerbaijan (مسن - Mesan)
• Mesen, Hormozgan (مسن - Mesen)
• Masan, Kurdistan (ماسان - Māsān)
• Masen (ماسن - Māsen), South Khorasan Province

The Movement for the Social Evolution of Black Africa (, MESAN) was a political party in the Central African Republic. In its original form, it was nationalist quasi-religious party that sought to affirm black humanity and advocated for the independence of Ubangi-Shari, then a French colonial territory.