Xm or XM may refer to:

• XM Satellite Radio, a US and Canadian radio company now merged into Sirius XM Holdings.

• XM (file format), a computer file format for music

• XM (album), a live-in-studio album recorded by Porcupine Tree

• BMW XM, a full-size luxury performance SUV made by BMW

• Citroën XM, a discontinued executive car made by Citroën

• C.A.I. First or Alitalia Express (IATA code XM, 1997-2005), an Italian airline

• A nonstandard Roman numeral for 990 (standard is CMXC)

• (6903) 1989 XM, a main belt minor planet

• Cross-matching of blood products

See also

• Includes several weapons and other military hardware

• Includes many shows broadcast on XM

• MX (disambiguation)