List of York and Lancaster Regiment battalions

List of Battalions of the York and Lancaster Regiment:

Regulars

 * 1st Battalion (Regular) - World War I - 83rd Brigade, 28th Division. World War II - 15th Brigade, 5th Infantry Division
 * 2nd Battalion (Regular) - World War I - 16th Brigade, 6th Division. World War II - 14th Brigade, 6th Infantry Division (later 70th Infantry Division)

Militia

 * 3rd (Militia) Battalion (3rd West York Regiment of Militia)

Territorials and Volunteers

 * 1st (Hallamshire) Volunteer Battalion (1881–1908)
 * 2nd Volunteer Battalion (1881–1908)
 * 4th (Hallamshire) Battalion (1908–1924) formerly 1st (Hallamshire) Volunteer Battalion
 * 5th Battalion (1908–1936) formerly 2nd Volunteer Battalion
 * 67th (York and Lancaster Regiment) Heavy Anti-Aircraft Regiment, Royal Artillery (1936–47) formerly 5th Battalion
 * The Hallamshire Battalion (1924–1967)
 * Yorkshire Volunteers (1967–1993)
 * The Hallamshire (T) Battalion (1967–1971)

Hostilities only units

 * 1/4th (Hallamshire) Battalion - 148th (3rd West Riding) Brigade, 49th (West Riding) Infantry Division
 * 1/5th Battalion - 148th (3rd West Riding) Brigade, 49th (West Riding) Infantry Division
 * 2/4th (Hallamshire) Battalion (1914–19) – 2nd Line Territorial Force (TF) – 187th Brigade, 62nd (2nd West Riding) Division
 * 3/4th (Hallamshire) Battalion (1915–19) – 3rd Line TF – Home Service
 * 2/5th Battalion (1914–18) – 2nd Line TF – 187th Brigade, 62nd (2nd West Riding) Division
 * 3/5th Battalion (1915–16) – 3rd Line TF – Home Service
 * 6th (Service) Battalion (1914–19) – 32nd Brigade, 11th (Northern) Division
 * 6th Battalion (1939–47) – 2nd Line TA – 138th Infantry Brigade, 46th Division
 * 7th (Service) Battalion (Pioneers) (1914–19) – 50th Brigade, 17th (Northern) Division
 * 7th Battalion (Pioneers) (1940–46) – served in India throughout the war
 * 8th (Service) Battalion (1914–19) – 70th Infantry Brigade, 23rd Division
 * 8th Battalion (Pioneers) (1940–45) – Indian 25th Division
 * 9th (Service) Battalion (1914–19) – 70th Brigade, 23rd Division
 * 9th Battalion (1940–46) – Indian 25th Division
 * 10th (Service) Battalion (1914–18) – 63rd Infantry Brigade, 21st Division (attached to 37th Division from 1916)
 * 10th Battalion (1940–41) – converted to 150th Regiment, Royal Armoured Corps, 254th Indian Tank Brigade
 * 11th (Reserve) Battalion (1914–16) – 90th Brigade, 33rd Division – Home Service, disbanded 1916
 * 11th Battalion (1940–44)
 * 12th (Service) Battalion (Sheffield) (1914–18)  –  94th Brigade, 31st Division
 * 13th (Service) Battalion (1st Barnsley) (1914–15)  – 94th Brigade, 31st Division (attached 93rd Brigade from Feb. 1918)
 * 14th (Service) Battalion (2nd Barnsley) (1914–18) – 94th Brigade, 31st Division
 * 15th (Reserve) Battalion (1915–1916) – Home Service
 * 16th (Transport Workers) Battalion (1916–19) – Home Service
 * 17th (Labour) Battalion (1916–17) – Home Service
 * 18th (Service) Battalion (1918) – 41st Brigade, 14th (Light) Division (from June 1918)
 * 50th (Holding) Battalion (1940)
 * 53rd (Service) Battalion (1919)