John Alexander Crawford (born May 31, 1983), professionally known as JonFX, is a music producer from St. Andrews, Jamaica. He has worked with dancehall and reggae artists Shabba Ranks, I Wayne, Vybz Kartel, Gyptian and Akon, as well as late rapper XXXTentacion. In June 2018, he was appointed as a governor on the board of the Florida Grammy Chapter.
In November 2018, Arms Around You, a song produced by JonFX, entered the Billboard Hot 100 at number 28; Streaming Songs Chart at number 18; R&B Streaming Songs Chart at number one; and Digital Sales Chart at number 18. He produced Sizzla Kalonji's I'm Yours, which made to the Billboard Reggae chart and Billboard Heatseeker's chart at No. 3 and No. 4.