Blue Army

Blue Army may refer to:


 * Blue Army (Poland), the Polish army unit
 * Blue Army (Russia), the armed peasant group
 * Blue Army of Our Lady of Fátima, the Catholic lay organization
 * Blue Army (Aerosmith), Aerosmith fans
 * Ipswich Town F.C., nickname for Ipswich Town football club fans
 * Leicester City F.C., nickname for the football club