Robert Keith McFerrin Jr. (born March 11, 1950) is an American world, reggae and jazz singer and songwriter. He is known for his vocal techniques, such as singing fluidly but with quick and considerable jumps in pitch—for example, sustaining a melody while also rapidly alternating with arpeggios and harmonies—as well as scat singing, polyphonic overtone singing, and improvisational vocal percussion. He is widely known for performing and recording regularly as an unaccompanied solo vocal artist. He has frequently collaborated with other artists from both the jazz and classical scenes.

McFerrin's song "Don't Worry, Be Happy" was a No. 1 U.S. pop hit in 1988 and won Song of the Year and Record of the Year honors at the 1989 Grammy Awards. McFerrin has also worked in collaboration with renowned jazz fusion instrumentalists, including the pianists Chick Corea (of Return to Forever), Herbie Hancock (of The Headhunters), and Joe Zawinul (of Weather Report), the drummer Tony Williams, and the cellist Yo-Yo Ma.

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