The Lycée Henri-IV is a public secondary school located in Paris. Along with Louis-le-Grand it is widely regarded as one of the most demanding sixth-form colleges (lycées) in France.

The school has more than 2,500 pupils from collège (the first four years of secondary education in France) to classes préparatoires (classes to prepare students for entrance to the elite Grandes écoles).

Its motto is "Domus Omnibus Una" ("One House For All").