Mei may refer to:
Arts and entertainment
- Mei (film), a 2019 Tamil thriller
- Mei (album), by Echolyn, 2002
People
- Mei (surname), including a list of people with the surname
- Mei (given name), including a list of people and fictional characters with the given name
Places
- Mei County, Shaanxi, China
- Mei County, Guangdong, China
- Mei Pass, Guangdong, a mountain pass
- Mei River, Guangdong
- Eiras e Mei, a civil parish of Arcos de Valdevez, Portugal
Other uses
- Mei (dinosaur), a genus of bird-like Chinese dinosaur
- Methyl iodide, MeI, a chemical compound
- Midob language of Sudan, ISO 639-3 language code mei
- Prunus mume, or mei, the Chinese plum
- Meilin "Mei" Lee, a main protagonist from a 2022 American animated film Turning Red
- Mei-chan, a pet name of Tadakuni's younger sister in Daily Lives of High School Boys
- Mei or Méi, month May in several Indonesian local languages, including Malay, Indonesian, Javanese, Balinese, Sundanese, and Hulontalo