11th Battalion

11th Battalion may refer to:


 * 11th Battalion (Australia), a unit of the Australian Army
 * 2/11th Australian Infantry Battalion, a unit of the Australian Army
 * 11th/28th Battalion, Royal Western Australia Regiment, a unit of the Australian Army
 * 11th Philippine Scout Battalion, a unit of the Philippine Army
 * 11th Battalion Ulster Defence Regiment, a unit of the British Army
 * Czechoslovak 11th Infantry Battalion, a unit of the Czechoslovak army in exile during World War II