Karachi Grammar School is an independent, English-medium school in Saddar, Karachi, Sindh, Pakistan. It is a highly selective, coeducational day school (formerly day/boarding school) serving approximately 2,400 students aged between three and nineteen years.
Established in 1847 by the Reverend Henry Brereton, the first chaplain of Karachi, as a school for "English and Anglo-Indo children", it is the oldest private school in Pakistan and the second oldest in South Asia,a member of the Winchester International Symposium and a former member of the Headmaster's Conference.