Lieutenant-General Sir Harold Williams KBE CB (1 June 1897 – 17 October 1971) was an Irish-born British Army officer, engineer and mountaineer.

[4] He served with the unit as part of the Aden Field Force after which he spent three years in Roorkee, first as Company Officer and finally as Assistant Adjutant and Quartermaster, Bengal Sappers and Miners.

[1] Shortly after the outbreak of the Second World War, Williams was appointed Commander Royal Engineer, 1st Armoured Division and served in the Battle of France.

From 1943 to 1944 he was Chief Engineer, IV Corps, serving in Assam and the Burma Campaign during which he was mentioned in dispatches.

Williams joined the Alpine Club in 1953 and participated in a number of minor Himalayan expeditions, including Trisul and Bandarpunch.