The Barcelona midfielder has been out for five months with a foot injury and although passed fit did not feature in their Champions League final defeat by Olympique Lyonnais on Saturday.
Guijarro, 20, is one of 10 Barcelona players included in the squad for Spain's second appearance at the World Cup.
La Roja are looking to improve on their performance in 2015 when they finished bottom of their group.
Atletico Madrid trio Angela Sosa, Esther Gonzalez and Olga Garcia were surprisingly left out.
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"Until 24 hours before the first game, if there is any question or injury, (Sosa) has the chance of playing at the World Cup," Vilda told reporters.
Spain are in Group B with South Africa, Germany and China.
Squad
Goalkeepers: Lola Gallardo, Sandra Panos, Mariasun Quinones
Defenders: Irene Paredes, Marta Corredera, Leila Ouahabi, Ivana Andres, Marta Torrejon, Celia Jimenez, Mapi Leon, Andrea Pereira
Midfielders: Amanda Sampedro, Aitana Bonmati, Patri Guijarro, Virginia Torrecilla, Alexia Putellas, Vicky Losada, Silvia Meseguer
Forwards: Jenni Hermoso, Andrea Falcon, Lucia Garcia, Nahikari Garcia, Mariona Caldentey
(Reporting by Rik Sharma; Editing by Ken Ferris)
