The 2017–18 season is San Martín de San Juan's fourth consecutive season in the top-flight of Argentine football. The season covers the period from 1 July 2017 to 30 June 2018.

Current squad .

Transfers In DatePos.NameFromFee1 July 2017MF Emiliano Agüero River PlateUndisclosed17 July 2017DF Gonzalo Prósperi San LorenzoUndisclosed23 July 2017MF Gabriel Carabajal Godoy CruzUndisclosed28 July 2017MF Álvaro Fernández Seattle Sounders FCUndisclosed

Out DatePos.NameToFee1 July 2017FW Diego Cháves San Luis de QuillotaUndisclosed1 July 2017FW Emanuel Dening Yeni MalatyasporUndisclosed10 July 2017MF Javier Capelli SarmientoUndisclosed24 July 2017DF Franco Lazzaroni Atlético de RafaelaUndisclosed

Loan in Date fromDate toPos.NameFrom17 July 201730 June 2018DF Leandro Vega River Plate19 July 201730 June 2018MF Carlos Luque Internacional22 July 201730 June 2018FW Nicolás Messiniti Independiente

Friendlies Pre-season

Primera División

League table

Results by matchday

Copa Argentina

References