The 1977 Florida Federal Open was a women's singles tennis tournament played on outdoor hard courts in Palm Harbor, Florida in the United States.

The event was part of the A[a] category of the 1977 Colgate Series.

It was the fifth edition of the tournament and was held from September 26 through October 2, 1977.

[2] Unseeded Virginia Ruzici won the title and earned $6,000 first-prize money.

[2][1] Virginia Ruzici defeated Laura DuPont 6–4, 4–6, 6–2 Linky Boshoff / Ilana Kloss defeated Brigitte Cuypers / Marise Kruger 7–6(7–4), 6–3