Mein may refer to:

  • Mein clan, an ethnic group living along the Forcados River in Delta State, Nigeria
  • Mein (noodles), a variety of Chinese noodles made from wheat
  • Mein (song), a song by the band Deftones and System of a Down singer Serj Tankian
  • Écoust-Saint-Mein, a commune in the Pas-de-Calais department in France
  • John Gordon Mein (1913-1968), a United States ambassador to Guatemala, the first to be assassinated while in service
  • Will G. Mein (1866 -19?), a British book illustrator who flourished in the late 19th to early 20th century
  • William Mein Smith, (1799-1869), a key actor in the early settlement of New Zealand's capital city, Wellington