December 6
Flags are flown at half-mast on the National Day of Remembrance and Action on Violence Against Women.
November 19
Flags will be flown at half-mast until November 28 in memoriam of OPP Constable Marc Hovingh. Hovingh passed away on November 19.
November 11
Flags are flown at half-mast on Remembrance Day.
November 1
Flags will be flown at half-mast from sunrise to sunset on November 1 in memoriam of former MPP Margaret Birch. Birch passed away on October 29.
October 4
Flags are flown at half-mast on Firefighters’ Memorial Day (Ontario).
September 27
Flags are flown at half-mast on Police and Peace Officers' National Memorial Day.
September 19
Flags will be flown at half-mast until October 6 in memoriam of former Prime Minister John Turner. Turner passed away on September 19.
September 13
Flags are flown at half-mast on Firefighters' National Memorial Day.
September 9
Flags will be flown at half-mast from sunrise to sunset on September 9 in memoriam of former MPP James A. Taylor. Taylor passed away on September 1.
August 9
Flags will be flown at half-mast from sunrise to sunset on August 9 in memoriam of former MPP Douglas Jack Wiseman. Wiseman passed away on August 1.
July 14
Flags will be flown at half-mast from sunrise to sunset on July 14 in memoriam of former MPP William Walter Barlow. Barlow passed away on July 5, 2020.
June 23
Flags are flown at half-mast on the National Day of Remembrance for Victims of Terrorism.
April 28
Flags are flown at half-mast on The Day of Mourning for Persons Killed or Injured in the Workplace.
April 24
Flags will be flown at half-mast on April 24 in memoriam of former MPP Aileen Carroll. Carroll passed away on April 19.
April 9
Flags are flown at half-mast on Battle of Vimy Ridge Day.
February 10
Flags will be flown at half-mast on February 10 in memoriam of former MPP Jim Brown. Brown passed away on January 31.
January 9–10
Flags are flown at half-mast in memory of the victims of the plane crash in Tehran, Iran.