National anthems are salient representations of nation states, used to define social and personal boundaries (Folkestad, 2002). Whilst children develop knowledge of national symbols such as national anthems by the age of 5 (Jahoda, 1963), little is known about how a national anthem contributes to a sense of national identity, or the affective reactions elicited by hearing it. Two exploratory studies investigated 8–10-year-old children’s (N = 92) thoughts, feelings and associations when listening to the British National Anthem, in comparison to pieces of music varying in their degree of national salience. The 10-year-old children generated more national associations to the National Anthem than younger children. More national associations were generated to the National Anthem by children with high, as opposed to low, national identity, but only for the 9- and 10-year-old children. It is argued that the National Anthem might play a role in the maintenance and validation of national identity, but that there are developmental effects operating within this relationship.