- (Irish mythology) The wife of Nemed. She died only twelve days after arriving in Ireland.
- Macha of the Tuatha Dé Danann who is the daughter of Ernmas and sister of Mórrígan.
- Japanese tea ceremony. Alternative spelling of Matcha.
- Anime. In the anime series .hack//SIGN a program and NPC created to observe human emotions.
- CRPGs. A playable character in the console role-playing game Chrono Cross.