William Earl "Bootsy" Collins (born October 26, 1951) is an American bass guitarist, singer-songwriter, and record producer.

Rising to prominence with James Brown in the early 1970s, and later with Parliament-Funkadelic, Collins established himself as one of the leading names and innovators in funk with his driving basslines and humorous vocals. He later formed his own P-Funk side project known as Bootsy's Rubber Band. He was a frequent collaborator with other musicians from a variety of genres, including dance music (Deee-Lite's "Groove Is in the Heart"), electronic big beat (Fatboy Slim's "Weapon of Choice"), and alternative metal (Praxis), among others. He is a member of the Rock and Roll Hall of Fame, inducted in 1997 with 15 other members of Parliament-Funkadelic. In 2020, Rolling Stone magazine ranked Collins number 4 in its list of the 50 greatest bassists of all time.