MY or my commonly refers to:

• my, the first-person possessive adjective in the English language, see I (pronoun)
• Burmese language (ISO 639 alpha-2, my)
• Motoryacht
• MAXjet Airways and Midwest Airlines (Egypt) IATA airline designators
• Malaysia (ISO country code, MY)
• MY Corp., a Korean chemical and health care company.
• Little My, a Moomin character.
• Model year
• Megalithic Yard
• .my, the Internet country code top-level domain for Malaysia
• The usual Romanization of the Cyrillic Мы (IPA: [mɨ]), the Russian pronoun for "we" as in the 1921 novel We.