Mutsu Munemitsu
- Birth: 1844
- Death: 1897
- Son: Mutsu Hirokichi
- Japanese: 陸奥 宗光 (Mutsu Munemitsu}
Munemitsu was born into a Samurai family in Wakayama in 1844. He joined the Kaientai near the end of the Bakumatsu Period. He was active in the Japanese foreign ministry as a diplomat, and worked to reverse the Unequal Treaties imposed on Japan by the Western powers.