The 2017 Liège–Bastogne–Liège was a road cycling one-day race that took place on 23 April.

It was the 103rd edition of the Liège–Bastogne–Liège and the eighteenth event of the 2017 UCI World Tour.

[2][3] It was won for the fourth time by Alejandro Valverde.

[4] As Liège–Bastogne–Liège was a UCI World Tour event, all eighteen UCI WorldTeams were invited automatically and obliged to enter a team in the race.

Seven UCI Professional Continental teams competed, completing the 25-team peloton.