1988 Spanish Open – Singles
      
Neige Dias won in the final 6–3, 6–3 against Bettina Fulco.
Seeds
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
Draw
Key
References
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 |  |  |  |  |  |  | | WTA Category 5 tournaments | 
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 |  |  |  | | WTA Category 4 tournaments | 
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 Dallas (S, D) Oakland (S, D) Houston (S, D) Tokyo Indoor (S, D) Eastbourne (S, D) Cincinnati (S, D) New Orleans (S, D) Filderstadt (S, D) Brighton (S, D) Chicago (S, D)
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 |  |  |  | | WTA Category 3 tournaments | 
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 |  |  |  | | WTA Category 2 tournaments | 
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 Brisbane (S, D) Oklahoma City (S, D) Kansas (S, D) Tokyo Outdoor (S, D) Geneva (S, D) Strasbourg (S, D) Birmingham (S, D) Nice (S, D) Aix-en-Provence (S, D) San Diego (S, D) Sofia (S, D) Phoenix (S, D) Brentwood (S, D) Indianapolis (S, D)
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 |  |  |  | | WTA Category 1 tournaments | 
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 Buenos Aires (S, D) Guarujá (S, D) Auckland (S, D Wellington (S, D) Singapore (S, D) Taiwan (S, D) Taranto (S, D) Barcelona (S, D) Båstad (S, D) Brussels (S, D) OTB Open (S, D) Aptos (S, D) Athens (S, D) Paris (S, D) San Juan (S, D) Guarujá II (S, D)
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