Washington Indoor 1978
Brian Gottfried won the title, beating Raul Ramirez 7–5 7–6 in the final.
Main draw 32 players
- 1🇺🇸Brian GottfriedFinal · Champion
- 2🇺🇸Eddie DibbsRound of 16 · Lost to Brian Teacher
- 3🇪🇸Manuel OrantesSemifinals · Lost to Brian Gottfried
- 4🇲🇽Raul RamirezFinal · Lost to Brian Gottfried
- 5🇺🇸Roscoe TannerSemifinals · Lost to Raul Ramirez
- 6🇺🇸John McEnroeQuarterfinals · Lost to Manuel Orantes
- 7🇺🇸Stan SmithQuarterfinals · Lost to Brian Gottfried
- 8🇺🇸Tim GulliksonQuarterfinals · Lost to Raul Ramirez
- 🇺🇸Brian TeacherQuarterfinals · Lost to Roscoe Tanner
- 🇺🇸Bob LutzRound of 16 · Lost to John McEnroe
- Q🇺🇸Gene MayerRound of 16 · Lost to Raul Ramirez
- 🇦🇺John NewcombeRound of 16 · Lost to Roscoe Tanner
- Q🇺🇸Mike CahillRound of 16 · Lost to Stan Smith
- 🇦🇺Phil DentRound of 16 · Lost to Brian Gottfried
- 🇦🇺Tony RocheRound of 16 · Lost to Tim Gullikson
- 🇮🇳Vijay AmritrajRound of 16 · Lost to Manuel Orantes
- 🇺🇸Arthur AsheRound of 32 · Lost to Brian Gottfried
- 🇺🇸Billy MartinRound of 32 · Lost to Manuel Orantes
- 🇺🇸Butch WaltsRound of 32 · Lost to Stan Smith
- 🇳🇿Chris LewisRound of 32 · Lost to Roscoe Tanner
- 🇺🇸Jeff BorowiakRound of 32 · Lost to Eddie Dibbs
- Q🇺🇸Jim Delaney#350Round of 32 · Lost to Gene Mayer
- Q🇿🇦John YuillRound of 32 · Lost to Mike Cahill
- 🇦🇺Kim WarwickRound of 32 · Lost to Raul Ramirez
- 🇺🇸Mike FishbachRound of 32 · Lost to Phil Dent
- 🇺🇸Nick SavianoRound of 32 · Lost to Tony Roche
- 🇺🇸Pat DupreRound of 32 · Lost to Brian Teacher
- 🇪🇨Ricardo YcazaRound of 32 · Lost to Bob Lutz
- 🇺🇸Terry MoorRound of 32 · Lost to Tim Gullikson
- 🇺🇸Tom GulliksonRound of 32 · Lost to John McEnroe
- 🇵🇾Victor PecciRound of 32 · Lost to Vijay Amritraj
- 🇭🇷Zeljko FranulovicRound of 32 · Lost to John Newcombe