Michael Morris, 3rd Baron Killanin

During his presidency, the Olympic movement experienced a difficult period, dealing with the financial flop of the 1976 Montreal Olympics and the boycotts of the 1980 Moscow Olympics. Denver, originally selected to host the 1976 Winter Olympics, withdrew and had to be replaced by Innsbruck. The cities of Lake Placid and Los Angeles were chosen for 1980 Winter and 1984 Summer Games by default due to a lack of competing bids. Killanin resigned just after the Moscow Olympics in 1980, and his position was taken over by Juan Antonio Samaranch. He was later unanimously elected Honorary Life President.

Killanin served as Chairman of the Race Committee for Galway Racecourse from 1970 to 1985. In his acceptance speech on behalf of the Galway Race Committee when accepting an award for its contribution to Irish Racing in 2013 the then chairman Tim Naughton said Lord Killanin's appointment as Chairman of the Race Committee in the early 1970s was instrumental in setting in motion a train of development that has resulted in the venue not only becoming a top horse-racing destination but also an attractive tourist destination. A keen horse racing enthusiast, Killanin also served as a steward of the Irish Turf Club on two occasions and on the National Hunt Steeplechase Committee.

Killanin served as Honorary Consul-General of Monaco in Ireland from 1961 to 1984.

In 1950, Lord Killanin became the head of the Olympic Council of Ireland (the OCI), and became his country's representative in the IOC in 1952. He became senior vice-president in 1968, and succeeded Avery Brundage, becoming President elect at the 73rd IOC Session (21–24 August) held in Munich prior to the 1972 Summer Olympics. He took office soon after the Games.

In November 1938, the young Lord Killanin was commissioned into the Queen's Westminsters, a territorial regiment of the British Army, where he was responsible for recruiting fellow journalists, including future Daily Telegraph editor Bill Deedes, and friends who were musicians and actors. He reached the rank of major and took part in the planning of D-Day and the Battle of Normandy in 1944, acting as Brigade Major for 30th Armoured Brigade, part of the 79th Armoured Division. He was appointed, due to the course of operations, a Member of the Order of the British Empire (MBE). After being demobilised, he went to Ireland. He resigned his TA commission in 1951.

Killanin was educated at Summerfields, Eton College, the Sorbonne in Paris and then Magdalene College, Cambridge, where he was President of the Footlights dramatic club. In the mid-1930s, he began his career as a journalist on Fleet Street, working for the Daily Express, the Daily Sketch and subsequently the Daily Mail. In 1937–38, he was war correspondent during the Second Sino-Japanese War.

In July 1927, he succeeded his uncle to become The 3rd Baron Killanin, which gave him an hereditary seat in the House of Lords at Westminster as it was a peerage in the Peerage of the United Kingdom.

Lord Killanin married (Mary) Sheila Cathcart Dunlop (1919–2007), MBE, of Oughterard, County Galway, in 1945. She was the granddaughter of Henry Dunlop, who built Lansdowne Road Rugby Ground in Ballsbridge, Dublin, in 1872. Her father was Douglas Canon Lyall Chandler Dunlop, Church of Ireland Rector of Oughterard. Lord and Lady Killanin had three sons: George Redmond ("Red"), Michael ("Mouse"), and John ("Johnny"), and a daughter, Monica Deborah.

Michael Morris, 3rd Baron Killanin, MBE, TD (30 July 1914 – 25 April 1999) was an Irish journalist, author, sports official, and the sixth President of the International Olympic Committee (IOC). He succeeded his uncle as Baron Killanin in the Peerage of the United Kingdom in 1927, when he was 12, which allowed him to sit in the House of Lords at the Palace of Westminster as Lord Killanin upon turning 21.

Morris was born in London, the son of Lt. Col. George Morris, an Irish Catholic from Spiddal in Connemara, County Galway. The Morrises were one of the 14 families making up the Tribes of Galway. During the First World War, Killanin's father was killed in action near Villers-Cotterêts, France, on 1 September 1914 while commanding the Irish Guards. His grandfather was The 1st Baron Killanin, who served as Lord Chief Justice of the King's Bench for Ireland from 1887 to 1889.

His Australian-born mother, Dora Maryon Wesley Hall (1891–1948), was the second-eldest daughter of English-born James Wesley Hall (1839–1901) and Australian Mary Dora Frederica Hall (née Dempster; 1864–1895). Wesley Hall was the first general manager of the Mount Morgan Gold Mining Company Limited in the Colony of Queensland, Australia, from 1886 to 1891. He was born in Kington, Herefordshire, Great Britain, to Walter Hall, a miller, and Elizabeth Carleton Skarratt. Lord Killanin's maternal grandmother, Dora Hall, was born in Williamstown, Colony of Victoria, to William Dempster, a bank manager, and Margaret Herbert Davies.