The 3rd/4th Cavalry Regiment is an armoured unit within the Australian Army's Royal Australian Armoured Corps. Formed in 1981 with the amalgamation of the 3rd Cavalry Regiment and the 4th Cavalry Regiment, from 1986 to 2014 the unit consisted of an independent squadron, B Squadron 3rd/4th Cavalry Regiment, within the 3rd Brigade in Townsville, Queensland. From 2017, B Squadron 3rd/4th Cavalry Regiment has been the training support and logistics squadron within the at Puckapunyal in Victoria.