GRX

GRX may refer to:

Science and technology

 * Glutaredoxin, a family of enzymes
 * GPRS Roaming Exchange, in mobile telephony
 * Shimano GRX groupsets, bicycle components for gravel riding

Other uses

 * Federico García Lorca Airport, Granada, Spain (IATA: )
 * Guriaso language, spoken on New Guineau (ISO 639-3: )
 * Martin Garrix (born 1996), Dutch DJ and record producer
 * GRX, a 2023 EP by Lola Índigo
 * GRX, a fictional car in the Speed Racer franchise