John Charles Julian Lennon (born 8 April 1963) is a British musician. He is the only child of John Lennon and Cynthia Powell (his father's first wife). The Beatles' manager, Brian Epstein, was his godfather. He has a younger half-brother, Sean Lennon. Lennon was named after his paternal grandmother, Julia Lennon.

Lennon was the direct inspiration for three Beatles' songs: "Lucy in the Sky with Diamonds", "Hey Jude" and "Good Night". He is devoted to philanthropic endeavors, most notably his own White Feather Foundation and the Whaledreamers Organization, both of which promote the co-existence of all species and the health and well-being of the Earth.