Chittagong Collegiate School is a government educational institution in Chittagong, the southern port city in Bangladesh.

Its classes were held in a brick building constructed during the early years of British rule.

The school was then shifted to a new location at the southern section of the market Sahib Hills.

In 1886, the school was relocated to its present location at Collegiate School Road, North Nalapara, near the Chittagong Railway Station, and was named as Chittagong Collegiate School.

[3] The main building of the institute is Academic Building-1 where the classes of school levels are held.