Billy Davis Jr. is an American singer and musician, best known as a member of the 5th Dimension. Along with his wife Marilyn McCoo, he had hit records during 1976 and 1977 with "I Hope We Get to Love in Time", "Your Love", and "You Don't Have to Be a Star ". Davis and McCoo were married in 1969. They became the first African-American married couple to host a network television series, titled The Marilyn McCoo & Billy Davis Jr. Show, on CBS in the summer of 1977, the year "You Don't Have to Be a Star " won a Grammy Award.

The 5th Dimension is an American vocal group. Their music encompasses sunshine pop, pop soul, and psychedelic soul.