The 1997 S.League was the 2nd season of the S.League, the top professional football league in Singapore.

The format of the league was changed, a single season of home and away matches replacing the split seasons and a playoff model of the 1996 season.

The 1997 S.League championship was won by Singapore Armed Forces FC.

Police Football Club underwent a rebranding, being renamed as Home United while NFL side Jurong Town Football Club, who renamed themselves Jurong FC, joined the competition taking the number of participating clubs to 9.

As a result of the construction of the new Jurong East Stadium being incomplete, Jurong FC used Bukit Gombak Stadium as their home ground for the 1997 S.League season.