Herbert Jeffrey Hancock (born April 12, 1940) is an American jazz musician, bandleader, and composer. He started his career with trumpeter Donald Byrd's group. Hancock soon joined the Miles Davis Quintet, where he helped to redefine the role of a jazz rhythm section and was one of the primary architects of the post-bop sound. In the 1970s, he experimented with jazz fusion, funk, and electro styles using a wide array of synthesizers and electronics. It was during this time that he released one of his best-known and most influential albums, Head Hunters.
Hancock's best-known compositions include "Cantaloupe Island", "Watermelon Man", "Maiden Voyage", and "Chameleon", all of which are jazz standards. During the 1980s, he had a hit single with the electronic instrumental "Rockit", a collaboration with bassist/producer Bill Laswell. Hancock has won an Academy Award and 14 Grammy Awards, including Album of the Year for his 2007 album River: The Joni Letters, a tribute to his friend Joni Mitchell. In 2024, Neil McCormick of The Daily Telegraph ranked Hancock as the greatest keyboard player of all time. In 2025, he received the Polar Music Prize.