Dhaka Collegiate School is a secondary school in Dhaka, Bangladesh. It is one of the oldest schools in Bangladesh. The students of collegiate school are called Collegiatian.

The school was established in Dhaka on 21 June 1835 as Dhaka English Seminary. It was the first government high school established by the British under the East India Company in the Bengal province for teaching English literature and science. This was later named as Dhaka Collegiate School. Mr. Redge, an English missionary, acted as the first head master of the school. In its first batch it had Nawab of Dhaka Khwaja Abdul Ghani as a student.

The foundation of Dhaka Intermediate College later to be known as Dhaka College was laid down in 1841. The school separated from the college in 1908. Since then it has been the Zilla School of Dhaka, although it continues to be called Dhaka Collegiate School.

This institution has delivered many famous alumni in its history.

The school is located in Sadarghat crossing, west of Bahadur Shah Park and south of Jagannath University, on the banks of the Buriganga River. Behind the School campus is Shumona Hospital.

The campus of Dhaka Collegiate School originally centered around a primary academic structure, later known as the "Puraton Bhaban" (Old Building). This building served as the hub for both administrative and academic activities. Over time, the campus expanded with the construction of three additional structures: the "Hall Bhaban", the "Biggan Bhaban" and the "Notun Bhaban" (New Building). After government had passed the gadget of redevelopment of the decaying Campus Buildings, Two of the original structures, including the historic Puraton Bhaban and Hall Bhaban, were demolished to make way for modernized facilities. Currently, the "Notun Bhaban" and "Biggan Bhaban" remain the two standing structures from the previous era. A new, multi-story academic building is currently under construction on the site of the former Biggan Bhaban and is nearing completion.

The school offers courses in science, and commerce and classes conducted in two shifts (morning and day).^{[citation needed]}