The 1978 Family Circle Cup was a women's tennis tournament played on outdoor clay courts at the Sea Pines Plantation on Hilton Head Island, South Carolina in the United States.

The event was part of the AAA[a] category of the 1978 Colgate Series.

It was the sixth edition of the tournament and was held from April 10 through April 16, 1978.

[2] Second-seeded Chris Evert won the singles title and earned $26,000 first-prize money.

[1] Chris Evert defeated Kerry Reid 6–2, 6–0 Billie Jean King / Martina Navratilova defeated Mona Guerrant / Greer Stevens 6–3, 7–5