SMX may refer to:

As an abbreviation:

• SMX (operating system), a Unix-like simulator on SPARC, the "SunOS/Solaris MINIX"
• Standard Musical Expression, a representation of simple music in ASCII that was used in some DOS software such as QBasic
• SMX Convention Center (company), an events venue management company in the Philippines
  • SMX Convention Center Manila, Pasay, Philippines
• Sulfamethoxazole, an antibiotic
• Honda S-MX, a minivan
• Spatial multiplexing, MIMO wireless transmission technique
• Singapore Mercantile Exchange
• SmX RNA and SmY RNA, ribonucleic acids in nematode worms
• S.M.X., director of Revelation at the 1999 New York Underground Film Festival
• StepManiaX, a rhythm game by Step Revolution

As a code:

• Santa Maria Public Airport, in California, US, IATA code
• C.A.I. First, regional Italian airline, ICAO airline code
• SMTC Corporation, Canada, TSX/Toronto ticker code
• Sanmenxia city in Henan, China, governmental code SMX
• Sendmail X, now MeTA1, mail server coded smX
• Special Mobile Machine—Exempt, prefix SMX, on vehicle registration plates of Colorado

This disambiguation page lists articles associated with the title SMX.
If an internal link led you here, you may wish to change the link to point directly to the intended article.