101st Operational Sustainment Brigade is a logistic brigade within 3rd (United Kingdom) Division of the British Army, formed from the Combat Service Support Group in 1999.

[2] Under the LANDmark reorganisation from 2002, the group was redesignated as 101st Logistic Brigade and placed under Force Troops Command, but remained under operational command of the 3rd (UK) Mechanised Division still.

Under the Army 2020 plan, the Brigade re-subordinated from HQ Force Troops Command to 3rd (United Kingdom) Division permanently on 1 December 2014.

It will include the Army's heavy equipment transport and powerpack repair capability; ensuring the armoured BCTs can deploy rapidly and sustain high intensity operations.

"[3] Combat Service Support Group (United Kingdom), at Buller Barracks, Aldershot Garrison[2][4] 101st Logistic Brigade, at Saint Omer Barracks, Aldershot Garrison[5][6] 101st Logistics Brigade, at Saint Omer Barracks, Aldershot Garrison[6] 101st Operational Sustainment Brigade,[3][20] at Saint Omer Barracks, Aldershot Garrison[6]