- DAAs. see Ministry of Consumer Services—delegated administrative authorities (DAAs)
- Dairy products
- processors
- Scott, 3781
- processors
- Day care. see Child care
- Debates re answers to oral questions
- Debt-to-GDP ratio. see Government debt—debt-to-gross domestic product (GDP) ratio
- Defending Employees’ Rights Act (Certification of Trade Unions), 2012 (Bill 85)
- first reading
- Hillier, 2182
- first reading
- Defending Employees’ Rights Act (Collective Bargaining and Financial Disclosure by Trade Unions), 2012 (Bill 78)
- first reading
- Hillier, 2001
- first reading
- Deferred votes
- Amendment to Throne speech debate (lost), 425–426
- Government bills
- Accepting Schools Act, 2012 (Bill 13)
- Ambulance Amendment Act (Air Ambulances), 2012 (Bill 50)
- second reading (carried), 4045
- Attracting Investment and Creating Jobs Act, 2012 (Bill 11)
- Family Caregiver Leave Act (Employment Standards Amendment), 2012 (Bill 30)
- second reading (carried), 3411
- Healthy Homes Renovation Tax Credit Act, 2012 (Bill 2)
- Putting Students First Act, 2012 (Bill 115)
- Residential Tenancies Amendment Act (Rent Increase Guideline), 2012 (Bill 19)
- Security for Courts, Electricity Generating Facilities and Nuclear Facilities Act, 2012 (Bill 34)
- second reading (carried), 1114
- Strong Action for Ontario Act (Budget Measures), 2012 (Bill 55)
- Government motions
- Government notice of motion
- Number 20 - 2012 Ontario budget (carried), 1806
- Government notice of motion
- Members' privileges (carried), 4044–4045
- Throne speech debate (carried), 426
- Defibrillators
- Albanese, 1846
- Delaying of proceedings. see Legislative procedure—use of dilatory tactics
- Detention centres. see Correctional centres
- Developmentally disabled adults. see Persons with disabilities
- Disabled children. see Children with disabilities
- Disabled persons. see Persons with disabilities
- Disaster/relief. see Natural disasters
- Disclosure
- Diseases/disorders/conditions
- Divisions (recorded vote)
- Amendments to Throne speech debate (lost), 425–426
- Government bills
- Accepting Schools Act, 2012 (Bill 13)
- second reading (carried), 2069–2070
- Ambulance Amendment Act (Air Ambulances), 2012 (Bill 50)
- second reading (carried), 4045
- Attracting Investment and Creating Jobs Act, 2012 (Bill 11)
- second reading (carried), 843–844
- Healthy Homes Renovation Tax Credit Act, 2012 (Bill 2)
- Security for Courts, Electricity Generating Facilities and Nuclear Facilities Act, 2012 (Bill 34)
- second reading (carried), 1114
- Accepting Schools Act, 2012 (Bill 13)
- Government motions
- Government notice of motion
- Number 20 - 2012 Ontario budget (carried), 1806
- Government notice of motion
- Members' privileges (carried), 4040–4045
- Opposition day motions
- Private members' motions
- Private members' public bills
- Addressing Ontario’s Debt Through Alternatives to Public Sector Layoffs and Program Cuts Act, 2012 (Bill 94)
- second reading (lost), 2872
- Affordable Energy and Restoration of Local Decision Making Act, 2012 (Bill 42)
- second reading (lost), 1239
- Comprehensive Public Sector Compensation Freeze Act, 2012 (Bill 92)
- Endangered Species Amendment Act, 2012 (Bill 73)
- second reading (carried), 2302–2303
- Ensuring Local Voices in New Casino Gambling Development Act, 2012 (Bill 76)
- second reading (carried), 2105
- Far North Repeal Act, 2012 (Bill 44)
- second reading (lost), 1239–1240
- Gasoline Tax Fairness for All Act, 2012 (Bill 27)
- second reading (lost), 1576–1577
- Insurance Amendment Act (Risk Classification Systems for Automobile Insurance), 2012 (Bill 45)
- second reading (lost), 2872–2873
- Local Municipality Democracy Act, 2011 (Bill 10)
- second reading (lost), 298
- New Drivers’ Insurance Rate Reduction Act, 2012 (Bill 71)
- second reading (carried), 1924
- Pesticides Amendment Act (Licence for Cosmetic Purposes), 2012 (Bill 88)
- Public Safety Related to Dogs Statute Law Amendment Act, 2012 (Bill 16)
- second reading (carried), 654
- Retail Sales Tax Amendment Act (HST Rebate For Home Heating), 2011 (Bill 4)
- second reading (carried), 91
- York Region Transit Labour Disputes Resolution Act, 2011 (Bill 7)
- second reading (lost), 90–91
- Addressing Ontario’s Debt Through Alternatives to Public Sector Layoffs and Program Cuts Act, 2012 (Bill 94)
- Throne speech debate (carried), 426
- Doctor fees/salaries
- Doctor shortage. see also Physician recruitment
- Doctors
- Dog attacks. see also Pit bull terriers
- in Ontario
- Hillier, 640
- in Ontario
- Dog breeds. see also Pit bull terriers
- Dog owners
- Domestic violence
- "Downloading". see Government service transfer
- Driver examinations
- truck drivers over age 65
- McNaughton, 1255
- truck drivers over age 65
- Driver licences
- Drivers
- Drug abuse. see also Aboriginal communities—drug abuse; Prescription drugs—OxyNEO
- Drugs, generic. see also Prescription drugs
- Drummond Report. see Public Services for Ontarians: A Path to Sustainability and Excellence, 2012