The Lions improved upon their 7–11 record from 2017 and clinched a playoff berth following a week 19 win over the Edmonton Eskimos.

However, the team lost the East Semi-Final to the Hamilton Tiger-Cats by a 40-point margin, which is the largest in the Lions' playoff history.

[2] On November 30, 2017, Wally Buono stepped down as general manager, being replaced by Ed Hervey in that role.

This was the ninth consecutive season that the Lions held their training camp at Hillside Stadium in Kamloops, British Columbia.

[4] Main camp opened Sunday, May 20, 2018, with rookies reporting earlier.