Lenny Vallier (born 24 April 1999) is a French professional footballer who plays as a left-back for Primeira Liga club Nacional.
Vallier helped Stade de Reims win the 2017âÂÂ18 Ligue 2, helping promote them to the Ligue 1 for the 2018-19 season.
On 18 July 2023, Vallier signed with Guingamp.
On 30 June 2025, it was announced that Vallier had signed for Primeira Liga club Nacional for three seasons.
Reims