2017 BEC Tero Sasana F.C. season

The 2017 season was BEC Tero Sasana's 21st season in the Thai League T1 since 1997.

Transfers
First Thai footballer's market is opening on 14 December 2016 to 28 January 2017

Second Thai footballer's market is opening on 3 June 2017 to 30 June 2017