Jack Dwyer (1917–2005) was the retired head of the Oglebay Norton Company; he led the mining and lake transportation concern for 12 years until 1982. Born in Gary, Indiana, he graduated from Harvard Law School in 1944 and came to Cleveland to work with the firm of Thompson, Hine & Flory. He joined Oglebay Norton two years later, and in 1970 became the company’s president and chief executive officer. After Dwyer left Oglebay Norton, he returned to Thompson Hine as a partner. As chairman of the Greater Cleveland Growth Association in the early 1980s, he helped bring together government and corporate officials as the city emerged from default. He also served as a director of the Cleveland-Cuyahoga County Port Authority.

Dwyer was chairman, president or trustee of organizations that included the Red Cross, United Way, Federation for Community Planning and Musical Arts Association. He was on the boards of University Hospitals and St. Vincent Charity Hospital Development Fund Company. He was a life trustee of Notre Dame College and a major fundraiser and trustee for his alma mater, DePauw University (class of 1939), and also served as a trustee of John Carroll University and Laurel and Glen Oak schools. He was the founding chairman of the Cleveland Education Fund.