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Look up mysa in Wiktionary, the free dictionary.
MYSA or variants may refer to:
- Mathare Youth Sports Association, in Nairobi, Kenya
- MySA, a web site of the San Antonio Express-News in San Antonio, Texas
- Malaysian Space Agency, the national space agency of Malaysia
- Mysa Nal, the name of the White Witch, a fictional comic book character in the DC Universe
- Mysa, a water buffalo character in The Jungle Book by Rudyard Kipling