34th Battalion

34th Battalion may refer to:

Military units

 * 34th Battalion (Australia), 1st Australian Imperial Force
 * 34th Battalion (New Zealand)
 * 34th Battalion, CEF, Canadian Expeditionary Force
 * 34 Battalion (SWATF), South West Africa Territorial Force
 * HDF 34th Bercsényi László Special Forces Battalion, Hungary
 * 34th Battalion Virginia Cavalry