Serigne Fallou Niang (born 1 May 1995) is a Senegalese professional footballer who plays as a midfielder for the French club LB Châteauroux in the Ligue 2.
A youth of K.A.S. Eupen from the Aspire Academy, and thereafter moved to the Tunisian club CS Sfaxien. Niang joined LB Châteauroux from CS Sfaxien on 3 August 2017, signing a 3-year contract. Niang made his professional debut for Châteauroux in a 1-0 Ligue 2 win over Nîmes Olympique on 21 August 2017.
Niang represented the Senegal U20s at the 2015 FIFA U-20 World Cup.