As a name:

• Mai, old French for Maia, the Italic goddess of spring, the daughter of Faunus, and wife of Vulcan.
• Mài (Traditional Chinese : 麥), a Chinese surname.
• Mak, the transliteration of the same name pronounced in Cantonese.
• Mai , a female Japanese given name meaning "dance."
• Mai, a Vietnamese given and last name meaning "golden flower", in reference to the yellow Ochna integerrima blossoms that are used during the Lunar New Year in southern Vietnam as tokens of good luck.
• Mai, a Hmong name often use for the only daughter or the youngest daughter of the family.
• Mai - Wife of King Omar the first Of Baghdad.

In fiction:

• Taniyama Mai'',a character in the Japanese manga and tv series Ghost Hunt
• Mai the Psychic Girl, a 1985 manga.
• Mai Kawasumi, a character in the Kanon visual novel, anime, and manga.
• Mai Shiranui, a character in The King of Fighters series of video games.
• Mai Tokiha, the title character in the anime and manga My-HiME (originally Mai-HiME), and a supporting character in My-Otome.
• Mai Valentine (Mai Kujaku, 孔雀 舞 in the Japanese version), a character from the anime Yu-Gi-Oh! Duel Monsters.
• Mai, a supporting character from the television show Avatar: The Last Airbender.
• Mai, one of Pilaf's henchmen from Dragon Ball.
• Mai Tsubasa (aka Change Phoenix), a character in Dengeki Sentai Changeman.
• Mai, one of the main characters from the anime & eroge game Popotan.

In music:,

• Mai (singer) (舞) (b. 1984), formerly known as Ruppina, the stage name of J-Pop singer Mai Kudō.
• Mai (vocalist) (b. 1987), a J-pop singer from Yokohama.
• Mai Charoenpura, a Thai pop singer from Bangkok.
• Mai Kuraki (b. 1982) a popular J-pop singer.
• Mai Hoshimura (b. 1981) a J-pop singer under the Sony Music Japan label.
• Mai Kadowaki, a Japanese Seiyū.

Mai can also refer to:

• May, the fifth month of the year in the Gregorian Calendar, in French, Romanian, German, Norwegian and Welsh.
• Umai (also transliterated Ymai and Mai), a mother goddess in Siberian mythology, mostly among Turkic Siberians.
• An imperial title of Kanem and Bornu.

MAI as an acronym can stand for:

• Machine augmented intelligence, the use of technology to amplify and empower human thought and consciousness.
• Moscow Aviation Institute (Russian: Московский авиационный институт), an engineering an aviation academy in Russia.
• Multilateral Agreement on Investment, a treaty negotiated between members of the Organisation for Economic Co-operation and Development (OECD) between 1995 and 1998 to standardise rules on financial transactions and investment.
• Myanmar Airways International, an airline from Myanmar (Burma).
• Mycobacterium avium intracellulare, a mycobacterial infection which typically occurs in immunosuppressed patients, such as those in the late stages of AIDS.
• Market for Alternative Investment, a stock market for SMEs in Thailand.
• Member of the Appraisal Institute, a degree requiring ascending levels of tests.
• Motorsports Association of India, the FIA arm of Indian Motorsports.