Ruby Johnson (April 19, 1936[1] – July 4, 1999)[2] was an American soul singer, best known for her recordings on the Volt label in the late 1960s.

Her first single, "Calling All Boys", was issued in 1960 on the V-Tone label, before Duncan established his own recording company, NEBS.

[2] When her local supporter, disc jockey Al Bell, began working for Stax Records in Memphis in 1965, he won her a contract with the label.

31 on the Billboard R&B chart in 1966, and "If I Ever Needed Love", both tracks which became staples of subsequent soul compilations, such as those by Dave Godin.

[1] She worked in government posts, and eventually became the director of Foster Grandparents, a federal programme helping handicapped children relate to older generations.