1903
- January 22
- Christchurch Tramway Board (now the Christchurch Transport Board) holds its first meeting.
- February 20
- Singer Madam (later Dame) Nellie Melba gives concert.
- April 1
- Sydenham, Linwood and St Albans amalgamate with City to form greater Christchurch. Henry F. Wigram becomes Mayor.
- May 25
- Statue of Queen Victoria unveiled in Market Square, and the area is renamed Victoria Square.
- July 18
- Heavy snow in Canterbury.
- July 25
- City Council generates Christchurch’s first public electricity from a generator driven by the municipal refuse destructor. This eventually led to the formation of the Municipal Electricity Department, which was derived from the City Engineer’s Department in 1925.
- August 17
- City abattoir opens at Sockburn.
- September 4
- Canterbury Automobile Association formed.
- November 1
- Christchurch to Invercargill rail express service begins.