On 14th October 1942, Her Royal Highness, the Princess Royal visited Belfast City Hall during a short official visit to Northern Ireland.
On 14th December 1942, M. Jan Masaryk (Deputy Prime Minister of Czechoslovakia) and General Sergej Ingr laid a commemorative wreath at the Cenotaph in Belfast.
On 26th January 1943, the Duke of Abercorn (Governor of Northern Ireland) unveiled a commemorative stone that still stands in the grounds of City Hall, Belfast.
On 2nd May 1943, a parade through Belfast city centre saw Major General Vivian Henry Bruce Majendie take the salute from elements of various battalions at Belfast City Hall.
On 26th September 1943, dignitaries and military officers gathered at Belfast's City Hall to take the salute during a Battle of Britain commemoration parade.
On 25th January 2022, Belfast City Council hosted an LGBTQIA+ Holocaust Memorial Day event. Organisations such as Cara-Friend, The Rainbow Project, and Here-NI laid wreaths to remember those from the LGBTQIA+ community murdered by the Nazi regime.
Two stone columns stand on the front lawn of Belfast City Hall. The first commemorated the January 1942 arrival of the first members of the United States military to land in Ulster. A second similar column of Portland stone pays tribute to Able Seaman James Magennis, a Belfast-born recipient of the Victoria Cross.
Belfast City Hall contains several reminders of the Belfast Blitz of 1941, from the rebuilt east wing Great Hall and Ballroom to memorials to members of the Civil Defence Services.