Billie Jean King and Martina Navratilova defeated Rosemary Casals and Wendy Turnbull in the final, 6–3, 4–6, 6–3 to win the doubles tennis title at the 1980 Avon Championships. It was King's fourth and last Tour Finals title, and Navratilova's third.
Françoise Dürr and Betty Stöve were the reigning champions, but did not qualify this year.
Seeds
Billie Jean King / 
Martina Navratilova (champions)- Rosemary Casals /
Wendy Turnbull (final)
Draw
Key
- Q = Qualifier
- WC = Wild card
- LL = Lucky loser
- Alt = Alternate
- SE = Special exempt
- PR = Protected ranking
- ITF = ITF entry
- JE = Junior exempt
- w/o = Walkover
- r = Retired
- d = Defaulted
- SR = Special ranking
Draw
| Semifinals | Final | ||||||||||||
| 1 | Billie Jean King Martina Navratilova
| 6 | 6 | ||||||||||
| Kathy Jordan Anne Smith
| 4 | 3 | |||||||||||
| 1 | Billie Jean King Martina Navratilova
| 6 | 4 | 6 | |||||||||
| 2 | Rosemary Casals Wendy Turnbull
| 3 | 6 | 3 | |||||||||
| Laura duPont Pam Shriver
| 3 | 7 | 4 | ||||||||||
| 2 | Rosemary Casals Wendy Turnbull
| 6 | 6 | 6 | |||||||||
References
- Official Results Archive (ITF) Archived 2018-08-08 at the Wayback Machine
- Official Results Archive (WTA)