San Juan Futures 1978
Julie Anthony won the title, beating Mary Hamm 6–7 6–4 7–6 in the final.
Main draw 32 players
- 🇺🇸Julie AnthonyFinal · Champion
- 🇺🇸Mary HammFinal · Lost to Julie Anthony
- Q🇺🇸Beth NortonSemifinals · Lost to Mary Hamm
- 🇺🇸Bunny BruningSemifinals · Lost to Julie Anthony
- 🇺🇸Barbara PotterQuarterfinals · Lost to Mary Hamm
- Q🇭🇺Beatrix KleinQuarterfinals · Lost to Bunny Bruning
- 🇺🇸Carol BailyQuarterfinals · Lost to Beth Norton
- 🇸🇪Mimi WikstedtQuarterfinals · Lost to Julie Anthony
- 🇺🇸Ann Kiyomura HayashiRound of 16 · Lost to Beth Norton
- 🇬🇧Glynis ColesRound of 16 · Lost to Beatrix Klein
- 🇩🇰Helle SparreRound of 16 · Lost to Mimi Wikstedt
- 🇬🇧Jackie FayterRound of 16 · Lost to Bunny Bruning
- 🇦🇺Kym RuddellRound of 16 · Lost to Julie Anthony
- Q🇭🇺Marie PinterovaRound of 16 · Lost to Mary Hamm
- 🇺🇸Mary StruthersRound of 16 · Lost to Barbara Potter
- 🇦🇷Raquel GiscafreRound of 16 · Lost to Carol Baily
- Q🇳🇱Astrid SuurbeekRound of 32 · Lost to Raquel Giscafre
- 🇺🇸Candy ReynoldsRound of 32 · Lost to Glynis Coles
- 🇦🇺Chris OneilRound of 32 · Lost to Beatrix Klein
- PURCrissy Gonzalez De FuentesRound of 32 · Lost to Barbara Potter
- 🇦🇺Cynthia DoernerRound of 32 · Lost to Ann Kiyomura Hayashi
- 🇺🇸Diane DesforRound of 32 · Lost to Mary Hamm
- Q🇺🇸Donna GanzRound of 32 · Lost to Bunny Bruning
- 🇺🇸Heather LudloffRound of 32 · Lost to Mary Struthers
- Q🇺🇸Jane PreyerRound of 32 · Lost to Helle Sparre
- 🇺🇸Jane StrattonRound of 32 · Lost to Marie Pinterova
- LL🇺🇸Jean HepnerRound of 32 · Lost to Julie Anthony
- 🇨🇦Marjorie BlackwoodRound of 32 · Lost to Beth Norton
- LL🇧🇪Michele GurdalRound of 32 · Lost to Kym Ruddell
- 🇦🇺Pam WhytcrossRound of 32 · Lost to Jackie Fayter
- Q🇺🇸Rayni FoxRound of 32 · Lost to Mimi Wikstedt
- 🇺🇸Valerie ZiegenfussRound of 32 · Lost to Carol Baily