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:GRX) Guriaso language, spoken on New Guineau (ISO 639-3:grx) 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