Government Model Senior Secondary School, Sector-16 (often called GMSSS-16 or simply 16-Model) is a State-funded co-educational secondary school located in Chandigarh, India, educating students in grades K–12.

[2][3] The school is affiliated to the Central Board of Secondary Education and offers twenty-three subjects at the AISSCE level,[4] among the highest for any school in the region.

[5][6] It also claims a 100% pass percentage at the All India Secondary School Certificate Examination level.

[4] The school's main building was designed by Swiss architect Pierre Jeanneret, along with Bhanu Pratap Mathur and Jugal Kishore Chowdhary, in line with the former's modernist ideals[7][8] and was inaugurated by the then Commissioner of the Union Territory of Chandigarh in 1954.

The School is affiliated to the internationally-recognised Central Board of Secondary Education, New Delhi and follows the NCERT curriculum.