The 1912 Wellington City mayoral election was part of the New Zealand local elections held that same year. In 1911, elections were held for the Mayor of Wellington plus other local government positions. Thomas Wilford, the incumbent Mayor, resigned due to ill health and did not contest the ensuing election. David McLaren was elected to office as the new Mayor of Wellington, beating three other contenders and becoming the city's first Labour Mayor. The polling was conducted using the standard first-past-the-post electoral method.

The 1911 Wellington City mayoral election was part of the New Zealand local elections held that same year. In 1911, elections were held for the Mayor of Wellington plus other local government positions including fifteen city councillors, also elected biannually. Thomas Wilford, the incumbent Mayor sought re-election and retained office unopposed with no other candidates emerging. The polling was conducted using the standard first-past-the-post electoral method.