River Jude Phoenix (née Bottom; August 23, 1970 – October 31, 1993) was an American actor, musician, and activist.

Phoenix grew up in an itinerant family, as the oldest brother of Rain Phoenix, Joaquin Phoenix, Liberty Phoenix, and Summer Phoenix. He had no formal schooling, but he showed an instinctive talent for the guitar, and he played and sang on the streets for money. He began his acting career at age 10 in a handful of television commercials. He starred in the science fiction adventure film Explorers (1985) and had his breakthrough role in 1986's Stand by Me, a coming-of-age film based on the novella The Body by Stephen King.