William George Algar Orde-Powlett, 5th Baron Bolton JP DL (21 August 1869 – 11 December 1944) was a British peer and Conservative Party politician.
Orde-Powlett was born on 21 August 1869. He was the eldest son of William Orde-Powlett, 4th Baron Bolton of Bolton Castle (son of William Orde-Powlett, 3rd Baron Bolton) and Lady Algitha Frederica Mary Lumley (the daughter of Richard Lumley, 9th Earl of Scarbrough).
He was educated at Eton College and the Royal Military College, Sandhurst.
He was commissioned as a second lieutenant in the East Yorkshire Regiment however transferred to The King's Royal Rifle Corps on 24th July 1889. He was promoted Lieutenant 1st July 1891 but resigned his commission on 18th May 1892.
He was commissioned as a second lieutenant in the Yorkshire Hussars on the 16th March 1898 and subsequently promoted Lieutenant, however he resigned his commission in April 1902. The following month, on 28 May 1902, he was appointed major of the 1st Volunteer Battalion, the Princess of Wales's Own (Yorkshire Regiment). He later served with the Yorkshire Regiment during the First World War and retired with the rank of lieutenant colonel. From 1910 to 1918 he was MP for Richmond. From 1935 to 1944 he was Lord Lieutenant of the North Riding of Yorkshire
On 6 June 1893, he married Hon. Elizabeth Mary Gibson (1871, d. 9 December 1943) at St George's, Hanover Square. She was a daughter of Edward Gibson, 1st Baron Ashbourne and the former Frances Maria Adelaide Colles. Together, they were the parents of:
Lady Bolton died on 9 December 1943 and Lord Bolton died just over a year later on 11 December 1944 at age 75. He was succeeded in the barony by his surviving son, Nigel.