Adrian Norton Knatchbull-Hugessen (5 July 1891 – 30 March 1976) was a Canadian lawyer and senator.
Knatchbull-Hugessen was born in Ashford, Kent, England on 5 July 1891, the son of Edward Hugessen Knatchbull-Hugessen, 1st Baron Brabourne and Ethel Mary Walker, daughter of Sir George Gustavus Walker.
He was educated at Eton College, but emigrated to Canada to study law at McGill University in Montreal. He was called to the Canadian Bar in 1914. During the First World War, he served as a Captain in the Canadian Artillery. After the war, he became a successful lawyer and organiser for the Liberal Party of Canada. In the 1935 federal election, he ran unsuccessfully for election to the Canadian House of Commons as the Liberal candidate in the Montreal riding of St. Lawrence—St. George. He became King's Counsel (K.C.) in 1932. In 1937, he was appointed to the Canadian Senate.
He married Margaret Cecilia Duggan on 7 September 1922 Margaret (Peggy) was the only daughter of George Herrick Duggan(1862–1946) and Mildred Scarth Stevenson.
They had the following children:
He took his two sons Edward and into law business, but Edward died young. James K. Hugessen became an important Canadian judge.