Calvin Eugene Simon (May 22, 1942 – January 6, 2022) was an American singer who was a member of the bands Parliament and Funkadelic.

Simon was drafted into the United States Army in 1966, and served with C Battery, 3rd Battalion, 13th Field Artillery Regiment, 9th Infantry Division during the Vietnam War in 1967–68.

[1] Simon started out in the late 1950s as one of The Parliaments, a doo wop barbershop quintet led by George Clinton.

In 1978, Simon (along with other original Parliaments Fuzzy Haskins and Grady Thomas), left Parliament-Funkadelic after financial and management disputes with Clinton.

In 1981, the trio caused confusion when they formed a new band, and released an album called Connections & Disconnections under the name Funkadelic.