ProjeKct X was a side project of the music band King Crimson during the year 2000.

In 2000, while the band King Crimson recorded their album The ConstruKction of Light, the four members of this line-up also recorded the album Heaven and Earth as ProjeKct X. The line-up consisted of Robert Fripp on Guitar, Adrian Belew on Guitar and V-Drums, Trey Gunn on Warr Guitars, and Pat Mastelotto on traps and "buttons" (electronic percussion and loops).