The 1911 Christchurch North by-election was a by-election during the 17th New Zealand Parliament held on 17 August that year in the Christchurch North electorate. It was triggered by the death of sitting member Tommy Taylor on 27 July and was won by his close friend and political ally, Leonard Isitt.

The 17th New Zealand Parliament was a term of the New Zealand Parliament. It was elected at the 1908 general election in November and December of that year.