Hugh Patrick O'Neil (July 10, 1936 – September 14, 2015) was a politician in Ontario, Canada.

He was a Liberal member of the Legislative Assembly of Ontario from 1975 to 1995, and served as a cabinet minister in the government of David Peterson.

[7] The Liberals under David Peterson formed a minority government following the 1985 election, and O'Neil was appointed as Minister of Industry, Trade and Technology on June 26, 1985.

After his time in the legislature, he managed a property development company in the residential and commercial sector.

In July 2013, O'Neil and John Williams, former mayor of Quinte West, were awarded the Canadian Forces Medallion for Distinguished Service for their dedication in creating and completing the Afghanistan Repatriation Memorial at Bain Park in Quinte West adjacent to CFB Trenton, Canada's largest military base.