Marlborough Girls' College is a state single-sex secondary school in Blenheim, New Zealand. The school was established in 1963 after splitting from Marlborough College (now Marlborough Boys' College). Serving Years 9 to 13, the college has students as of .
This school was established in 1963. Previously Blenheim was served by the co-educational Marlborough College, which subsequently continued to serve as Marlborough Boys' College.
As of , Marlborough Girls' 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 5 and 6 under the former socio-economic decile system).
The Marlborough Girls' College has four houses: