Jeff Ament, American bass player and songwriter
Jeffrey Allen Ament (born March 10, 1963) is an American musician and songwriter who is best known as the bassist of the American rock band Pearl Jam, which he co-founded alongside Stone Gossard, Mike McCready, and Eddie Vedder.

Prior to his work with Pearl Jam, Ament was part of the 1980s Seattle-based grunge rock bands Green River and Mother Love Bone. He is known particularly for playing with the fretless bass, upright bass, and twelve-string bass guitars. Ament is also a member of the bands Temple of the Dog, Three Fish, RNDM, and Tres Mts.

In 2008, Ament released his first solo album, Tone. His second solo release, While My Heart Beats, followed in 2012, and his third in 2018: Heaven/Hell. Ament was inducted into the Rock and Roll Hall of Fame as a member of Pearl Jam on April 7, 2017. He was also recognized as one of the top hard rock/metal bassists of all time by Loudwire in 2016, being placed at #52 on the list.