The 2018 Tro-Bro Léon was a one-day road cycling race that took place on 15 April 2018.

It was the 35th edition of the Tro-Bro Léon and was rated as a 1.1 event as part of the 2018 UCI Europe Tour.

It was also the eighth event of the 2018 French Road Cycling Cup.

The race was won by Christophe Laporte (Cofidis).

[1] Nineteen teams were invited to take part in the race.