The International School (TIS) is a private, co-educational day school located in the Clifton locality of Karachi

TIS was established in 1996 by Taymur Mirza, being the first IB-affiliated educational institution to open in Pakistan.

Catering to pupils from the pre-school to high school level, it offers the International Baccalaureate (IB) PYP, MYP and DP. As of July 2019, the PYP, MYP and DP Coordinators at TIS are Henna Ahmed and Nayma Hasan. The Principal of the School is Samia Majid.