St Catherine's College, a Catholic secondary school for girls, operates in the Wellington suburb of Kilbirnie in New Zealand. The Sisters of Mercy founded St Catherine's in 1919 initially as a primary school before becoming a secondary school in 1950.
On 30 March 1983, St Catherine's College became an integrated school under the Private Schools Conditional Integration Act of 1975. The Board of Trustees was first elected in 1989 and is responsible for the governance of the College. In recent years a new multi-functional hall, called "Mercy Hall", has been opened as well as a Food Technology Centre, a Music Suite, and a new Design Arts Centre. The college also has a new administration area, a chapel, and specialist and multi functional teaching areas which were completed in September 2016.
As a state-integrated school, the proprietors of St Catherine's College charge compulsory attendance dues to cover capital costs. For the 2025 school year, the attendance dues payable is $1,147 per year per student.
As of , St Catherine's College has a roll of students, of which (%) identify as MÃÂori.
As of , the school has an Equity Index of , placing it amongst schools whose students have socioeconomic barriers to achievement (roughly equivalent to deciles 6 and 7 under the former socio-economic decile system).
St Catherine's College principals include: