Mai can mean several things:

• Mai (Traditional Chinese : 麥) is a Chinese surname that is often transliterated as "Mak".
• Mai also means "May", the fifth month of the year in the Gregorian Calendar, in French, German and Norwegian.
• Mai, the Psychic Girl is a manga.
• Mai (singer) (舞), formerly known as Ruppina, is the stage name for J-Pop singer Mai Kudō.
• "mai" is a male vocalist known for theme songs used in two of Sunrise's animated television series. The name is actually a pseudonym of Sunrise Studio 7 director Yoshitomo Yonetani.
• Mai Shiranui from the King of Fighters series of video games.
• Mai Tokiha from the anime and manga ,Mai Hime.
• Mai Valentine (孔雀 舞)from the anime Yu-Gi-Oh!.
• Mai, another name for the goddess Umai.
• Mai, the surname of Anthony.
• Wagner Class of `06 ;D Future asian stand up comic like Dat Phan, Bobby Lee and of course, Jackie Chan!
• The Last Airbender#Mai from the cartoon The Last Airbender.

MAI is also an acronym:

• Machine augmented intelligence, the use of technology to amplify and empower human thought and consciousness.
• Moscow Aviation Institute
• Multilateral Agreement on Investment, negotiated between members of the Organisation for Economic Co-operation and Development (OECD) between 1995 and 1998.
• Myanmar Airways International
• Member, Appraisal Institute
• Mycobacterium avium intracellulare