Asanteman Senior High School (often known as Asass) is a co-educational second-cycle institution in Kumasi in the Ashanti Region of Ghana. The school is regarded as the official school of the Ashanti Empire, with the Asantehene being the patron of the school. Students are known as "Nananom" an Asante word meaning "Kings and Queens". Due to its affiliations to the Ashanti Kingdom, the school holds cultural and traditional practices in the highest esteem. The school has prided itself as grooming grounds of kings and queens, where students are edified on the cultures of the Ashanti kingdom. Which is why upon completion, students assume the title “Nana” which means a King or a Queen. The school is graded a category A school according to the Ghana Education Service rankings. Over the last 17 years, the school has seen great improvement in academics and extra-curricular activities such as sports. It was regarded as the 4th best school in Ashanti region in the wassce 2014 results The school has over the last ten years been ranked between 16 and 22 among about 138 schools in the Ashanti Region for the annual West African Senior High School Certificate Examinations. Most of the entire student's population advances to tertiary institutions every year. Almost 70 percent of this figure going to the University of Cape Coast.

The school was founded as a co-educational day school in 1954 by the Asante Youth Association (AYA) in response to the growing demands for more second-cycle educational institutions in Ashanti. The school remained under the aegis of AYA until 1962 when it was absorbed into the public system by the government and from then on it grew from an initial one stream to three streams in the 1980s. Presently, the school runs ten streams in each of the three forms with a student population of about 1,500, 65 masters and 29 non-teaching staff.[2] The school was the fourth school to be established in the Ashanti Region and it was established in 1954.