M<sup>2</sup> or m<sup>2</sup> may refer to:
- Square metre (m<sup>2</sup>), an SI measure of area
- M squared (M<sup>2</sup>), a measure of laser beam quality
- M<sup>2</sup> (album), by Marcus Miller
- m<sup>2</sup> (artist), German DJ and musician Mathis Mootz
See also
- M2 (disambiguation)
- M (disambiguation)