SDX

SDX or sdx may refer to:


 * SDX, the IATA code for Sedona Airport, Arizona, United States
 * SDX, the station code for Sidki railway station, Pakistan
 * sdx, the ISO 639-3 code for Sibu Melanau language, Malaysia and Brunei
 * Sadako DX, a 2022 Japanese supernatural comedy film
 * Serdexmethylphenidate, prodrug of dexmethylphenidate