4th Infantry Brigade

4th Infantry Brigade may refer to:

United Kingdom

 * 4th Infantry Brigade (United Kingdom), a unit of the British 2nd Infantry Division in World War II
 * 4th London Infantry Brigade

Others

 * 4th Brigade (Australia), an Australian Army Reserve formation stationed in Victoria
 * 4th Light Horse Brigade, an Australian mounted infantry formation in World War I
 * 4th Infantry Brigade (Canada), a unit of the 2nd Canadian Division in World War I
 * 4th Infantry Brigade (Greece)
 * 4th Indian Infantry Brigade
 * 4th Infantry Brigade (New Zealand), a unit of the New Zealand Division in World War I
 * 4th Infantry Brigade (South Africa)