Gerald Patterson and Suzanne Lenglen defeated defending champions Randolph Lycett and Elizabeth Ryan in the final, 7–5, 6–3 to win the mixed doubles tennis title at the 1920 Wimbledon Championships.

[1][2] The nationality of Mrs M Blythman is unknown.

The nationalities of Miss AL Lister and Mme Paravicini is unknown.

The nationality of Mme AH Gobert is unknown.