Nation Song Contest 21 was the 21st edition of the Nation Song Contest, and it was held in Alinta after their second win in NSC 20. Tohru, Pangora and Fervorosia debuted. Mooseland missed the deadline for participation, whilst Eurora was banned from entering. Orion withdrew voluntarily. Ametan, Canamjik and Escotia returned after a long leave, whilst Isaria came back, having been banned from entering NSC 20.