| Mambau National Secondary School | |
| Native Name: | Sekolah Menengah Kebangsaan Mambau |
| Motto: | Berilmu, Berjaya, Berbakti |
| Established: | 1989 |
| Principal: | En Abd Halim Bin Md Yunus |
| Head Name: | Second Master |
| Head Name2: | Assistant Headmaster |
| Founder: | Pn. Peter Lee Nee Pamela Ching Shoo Peng |
| Enrollment: | 1124 |
| Grades: | Form 1 - Form 5 |
| Motto Translation: | Knowledgeable, Successful, Service" |
| Free Label 1: | Abbreviation |
| Free 1: | Mambau |
| Website: | http://www.smkmambau.edu.my/smkm/ |
Mambau National Secondary School (Malay: Sekolah Menengah Kebangsaan Mambau) is a national secondary school which was opened in 1989.[1] The school is located in Mambau, Seremban District, Negeri Sembilan, Malaysia.
The school was opened in December 1989. It was built within a 23ha compound with a budget of RM 2.1 million. SMK Mambau started as a B-grade school with only 163 students enrolled.
SMK Mambau is situated within the district of Seremban. The students of the school are hailed from localities such as Kampung Baru Mambau, Kampung Batu Tiga, Kampung Mantau, Taman Angsamas, Taman Kelab Tuanku, Taman Seri Mambau, Kampung Bemban, Bandar Sri Sendayan and Bandar Springhill, with the latter is the only one situated in Port Dickson District. By 2001, SMK Mambau comprised five building blocks, science labs and a workshop on Living Skills.
The school was crowned as first runner up of The Nation's Most Promising Schools (Anugerah Sekolah Harapan Negara), held in conjunction of Teacher's Day on 16 May 2007 at Persada Johor, Johor Bahru.