| Date | | | |
| 9-Jan-1900 | | His Royal Highness the Duke of Connaught, K.G., sworn in as Commander of the Forces, in succession to F M. Lord Roberts. | |
| 4-Apr-1900 | | State entry of Her Majesty Queen Victoria into Dublin, on the occasion of her visit to Ireland. Address of welcome presented by the Lord Mayor at the city boundary, Leeson-street Bridge. | |
| 9-Apr-1900 | | Foundation stone of a new Nursing Home, in connection with the City of Dublin Hospital, laid by H.R.H. Princess Christian of Schleswig-Holstein. | |
| 21-Apr-1900 | | Grand parade of the troops in garrison , before Her Majesty the Queen, in the Phoenix Park. | |
| 25-Apr-1900 | | As a memento of her visit to Dublin, Her Majesty presented a piece of plate to the citizens. It is in the form of a silver cup, heavily gilt, and is designed after an old Irish two-handled cup. It stands 18 inches high and weighs 256 ounces. | |
| 26-Apr-1900 | | Departure of Her Majesty from Kingstown. | |
| 6-Aug-1900 | | Dublin Boundaries Act received Royal Assent. By this Act the Urban Districts of Clontarf, Drumcondra and Glasnevin, and New Kilmainham, and portions of the county of Dublin, were included within the City boundary. | |
| 13-Nov-1900 | | Right Hon. George Wyndham sworn in as Chief Secretary. | |
| 24-Jan-1901 | | King Edward VII. proclaimed in Dublin. | |
| 31-Mar-1901 | | Census of the population of Dublin taken. Number of inhabitants within the municipal area, 280,108, inhabiting 32,004 houses. | |