- Ukrainian Canadian Congress
- Martiniuk, 4855
- Ukrainian Canadians
- Ukrainian Heritage Day Act, 2010 (Bill 149)
- first reading
- Martiniuk, 4078-4079
- first reading
- Ukrainian Heritage Day Act, 2011 (Bill 155)
- Underground economy. see Occupational health and safety—migrant workers and the underground economy; Occupational health and safety—regulation and enforcement—in underground economy
- Underground utility infrastructure
- safety. see also Ontario One Call Ltd.—call centre for underground utility location services
- Understand Me: A Strategic Plan for Improving Mental Health and Supporting Students with Mental Health Problems in the Thames Valley District School Board for 2010 to 2015 (Thames Valley District School Board). see Reports—Understand Me: A Strategic Plan for Improving Mental Health and Supporting Students with Mental Health Problems in the Thames Valley District School Board for 2010 to 2015 (Thames Valley District School Board)
- Unemployment. see Government record—NDP (1990-1995)—unemployment
- Unemployment rate
- Union certification
- Union Gas Ltd.
- storage facilities
- Tabuns, 2518-2519
- storage facilities
- Unions. see also Workers' rights—right to unionize
- United Kingdom
- United Nations Convention on the Rights of the Child
- Horwath, 3340-3341
- United States
- United Way of Middlesex and London. see Charitable fundraising—United Way of Middlesex and London
- Universal housing benefit
- DiNovo, 5393
- Universal Windows. see Window industry—Universal Windows
- Universities/colleges. see also Lobbyists—employed by universities/colleges
- Lakehead University
- Orillia Campus
- Dunlop, 4502
- Orillia Campus
- Ontario College of Art and Design (OCAD)
- Trent University
- University of Guelph
- Sandals, 752
- University of Ontario Institute of Technology (UOIT)
- University of Toronto (U of T)
- York University
- sustainability strategy and zero waste program
- Sergio, 1732-1733
- sustainability strategy and zero waste program
- Lakehead University
- University Health Network. see Hospital administration—continuous quality improvement process—University Health Network
- University of Guelph. see Universities/colleges—University of Guelph
- University of Ontario Institute of Technology (UOIT). see Universities/colleges—University of Ontario Institute of Technology (UOIT)
- University of Toronto (U of T). see Universities/colleges—University of Toronto (U of T)
- "Uploading" government services. See Government service transfer to municipal jurisdiction—return to provincial jurisdiction
- Urban sprawl. see Cities and towns—growth and environmental impact
- Ursuline Religious of London Act (Tax Relief), 2011 (Bill Pr43)
- U.S. Steel Canada. see Steel industry shutdowns—U.S. Steel Canada
- Uxbridge Cottage Hospital. see Hospital services—emergency—Markham Stouffville Hospital (Uxbridge Cottage Hospital site)