Pham Huy Hung (born October 3, 1998), known professionally as itachi chill ( denoted Kai-chill or Text-chill pronounced: / ἐγρήγοροι /, Jômjâêl) is a DJ, rapper, and producer sound recording, audio director, music advisor and Vietnamese-English lyrics writer. itachi chill has been a dance music DJ since 2013 before moving to writing lyrics, rapping and producing music in 2015 with the names Chi Chill and Coldy.

Chi Chill combines rap and electronic music in most of his musical works. He won 4 Grammy Awards, 3 MTV Europe Music Awards, 2 American Music Awards and 1 Oscar. In addition, he also collaborated in producing many recordings under the pseudonym itachi chill. He appeared on the Forbes 30 list in 2018, ranking the richest electronic music artists under 30 in the 25th place.