1979 Colgate Series Championships

The 1979 Colgate Series Championships was a women's tennis tournament played on indoor carpet courts at the Capital Centre in Landover, Maryland in the United States that was the season-ending tournament of the 1979 Colgate Series. It was the third edition of the tournament and was held from January 2 through January 7, 1980. Second-seeded Martina Navratilova won the singles title and earned $75,000 first-prize money.

Singles
🇺🇸 Martina Navratilova defeated 🇺🇸 Tracy Austin 6–2, 6–1
 * It was Navratilova's 1st singles title of the year and the 35th of her career.

Doubles
🇺🇸 Billie Jean King / 🇺🇸 Martina Navratilova defeated 🇺🇸 Chris Evert / 🇺🇸 Rosemary Casals 6–4, 6–3

Prize money
Doubles prize money is per team.