Betty-Jean Hagen (October 17, 1930 – December 29, 2016) was a Canadian-born violinist and musical educator living in the United States.
Hagen was born in Edmonton and studied violin there with Alexander Nicol. Hagen won awards at the Alberta Music Festival in 1937 and 1938. She studied at the Chicago Conservatory from 1938 to 1939, mainly with Ludwig Becker; she had received a scholarship to study both violin and piano but later decided to focus on violin.
During the early 1940s, Hagen played with the Edmonton Philharmonic Orchestra; in 1946, she moved to Calgary, where she played with the Calgary Symphony Orchestra and studied with Clayton Hare. She studied at the Royal Conservatory of Music from 1949 to 1951 with Géza de Kresz. In 1950, Hagen won the Hagen Award. In 1951, she won the Eaton Graduating Scholarship, going on to study at Juilliard School with Ivan Galamian. She also won the Pathé-Marconi Prize, which allowed her to give recitals in France, Holland, Britain and Switzerland. From 1950 to 1951, she was a member of the Columbia Canadian Trio which toured Ontario, Quebec and the United States.
In 1952, she received the Harriet Cohen Commonwealth Medal after her debut in London. In 1953, she was named "Woman of the Year" in music by the Canadian press and received the Carl Flesch Medal from the Guildhall School of Music. In 1955, she received the Leventritt Foundation Award. Hagen went on to perform with the New York Philharmonic, the Cleveland Orchestra, the Pittsburgh Symphony Orchestra, the Concergebouw Orchestra, the London Philharmonic the Orchestre de la Suisse Romande and the Vancouver International Festival Orchestra. Hagen performed with the CBC Symphony Orchestra for the Canadian Broadcasting Corporation at the Stratford Festival in 1957. In 1962, she placed 7th in the International Tchaikovsky Competition in Moscow. She also performed at Expo 67. She also gave a command performance for Queen Elizabeth II, and had her New York debut as a soloist at Carnegie Hall. (dates for these events to be confirmed)