| Champ: | |
| Runner: | |
| Score: | 6–1, 6–2 |
| Biannual: | yes |
| Multi: | yes |
| Type: | mixed |
See main article: article and Tennis at the 2017 SEA Games.
Denise Dy and Treat Huey were the defending champions having won the event in 2015, but Huey chose not to participate
Nicha Lertpitaksinchai and Sanchai Ratiwatana won the gold medal, defeating Jessy Rompies and Christopher Rungkat in the final, 6–1, 6–2.
Peangtarn Plipuech and Sonchat Ratiwatana, and Dy and Ruben Gonzales won the bronze medals.
| Mixed Doubles | Nicha Lertpitaksinchai Sanchai Ratiwatana | Jessy Rompies Christopher Rungkat | Peangtarn Plipuech Sonchat Ratiwatana |
| Denise Dy Ruben Gonzales | |||