The Nairobi School is a national secondary school in Nairobi, Kenya. It was founded in 1902 by the British settlers who had made Nairobi their home after the construction of the Uganda Railway. In 1925, Lord Delamere and Sir Edward Grigg, then Governor of Kenya, separated the European Nairobi School into a senior boys' school (Prince of Wales School), a senior girls' school (Kenya High School) and a junior school (Nairobi Primary School).

In 1931, a new school was built on the 1-square-kilometre (250-acre) site at Kabete, the main school buildings being designed by Herbert Baker. The school was then named the Prince of Wales School but in 1965, following Kenya's independence, it was renamed Nairobi School. The school is popularly referred to as 'Patch'.