# 1977 French Open – Mixed doubles

John McEnroe and Mary Carillo defeated Iván Molina and Florența Mihai in the final, 7–6, 6–4 to win the mixed doubles tennis title at the 1977 French Open.
Kim Warwick and Ilana Kloss were the reigning champions, but did not compete this year.

## 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

### Finals

| Semifinals | Semifinals | Semifinals | Final | Final | Final |
| Iván Molina Florența Mihai | 6 | 6 | | | |
| Omar Laimina Dominique Beillan | 4 | 3 | | | |
| Omar Laimina Dominique Beillan | 4 | 3 | Iván Molina Florența Mihai | 6 | 4 |
| | | | John McEnroe Mary Carillo | 7 | 6 |
| John McEnroe Mary Carillo | 6 | 6 | John McEnroe Mary Carillo | 7 | 6 |
| Cliff Letcher Diane Evers | 1 | 4 | | | |

### Top half

| First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals |
| | | | I Molina F Mihai | 6 | 6 | | | | | | | | |
| D Bedel B Simon | 6 | 6 | D Bedel B Simon | 3 | 4 | | | | | | | | |
| P Du Pré D Du Pré | 1 | 1 | | | | | I Molina F Mihai | 6 | 6 | | | | |
| | | | | | | | T Vázquez R Giscafré | 1 | 3 | | | | |
| | | | P Beust F Bonicelli | 6 | 3 | 4 | | | | | | | |
| W Lofgren A-M Nasuelli | | | T Vázquez R Giscafré | 2 | 6 | 6 | | | | | | | |
| T Vázquez R Giscafré | w/o | | | | | | | | | | I Molina F Mihai | 6 | 6 |
| | | | | | | | | | | | O Laimina D Beillan | 4 | 3 |
| | | | B Prajoux Y Vermaak | 3 | 6 | 2 | | | | | | | |
| O Laimina D Beillan | 6 | 6 | O Laimina D Beillan | 6 | 4 | 6 | | | | | | | |
| T Svensson I Bentzer | 3 | 4 | | | | | O Laimina D Beillan | 6 | 1 | 9 | | | |
| | | | | | | | F González N Fuchs | 4 | 6 | 7 | | | |
| | | | F McNair R Fox | | | | | | | | | | |
| F González N Fuchs | w/o | | F González N Fuchs | w/o | | | | | | | | | |
| J Norbäck N Bohm | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals |
| J McEnroe M Carillo | 6 | 7 | | | | | | | | | | |
| D Naegelen F Guédy | 1 | 5 | J McEnroe M Carillo | 7 | 6 | | | | | | | |
| | | | T Koch C Doerner | 6 | 3 | | | | | | | |
| | | | | | | | J McEnroe M Carillo | 6 | 6 | | | |
| JR Pinto Bravo B Villaverde | w/o | | | | | | P Proisy R Maršíková | 1 | 4 | | | |
| D Contet P du Puy | | | JR Pinto Bravo B Villaverde | 4 | 1 | | | | | | | |
| | | | P Proisy R Maršíková | 6 | 6 | | | | | | | |
| | | | | | | | | | | J McEnroe M Carillo | 6 | 6 |
| E Montaño SM Villaverde | 1 | 3 | | | | | | | | C Letcher D Evers | 1 | 4 |
| R Cano R Darmon | 6 | 6 | R Cano R Darmon | 6 | 6 | | | | | | | |
| | | | J Yuill K Harter | 3 | 1 | | | | | | | |
| | | | | | | | R Cano R Darmon | 6 | 5 | | | |
| C Letcher D Evers | 6 | 6 | | | | | C Letcher D Evers | 7 | 7 | | | |
| P Hagelauer M Bureau | 4 | 3 | C Letcher D Evers | 4 | 6 | 6 | | | | | | |
| | | | H Gildemeister P Teeguarden | 6 | 4 | 2 | | | | | | |