| SMK Seksyen 9 | |
| Motto: | Beriman Berilmu Berjasa |
| Free Label 1: | Abbreviation |
| Free 1: | SMKS9 |
| Established: | 1997 |
| Type: | National Secondary School |
| Category: | National Secondary School |
| Principal: | Tun Haji Mohd Kamal Azizi Bin Abdul Aziz |
| Grades: | Form 1 - Form 5 |
| Yearbook: | Sinar Light |
| Affiliations: | Selangor State Education Department (Jabatan Pendidikan Selangor) |
| School Code: | BEA8629 |
| Logo Colours: | Red, Yellow, and white |
| District: | Petaling |
| Address: | Jalan Tengku Ampuan Rahimah 9/20, |
| City: | Seksyen 9, Shah Alam |
| State: | Selangor |
| Country: | Malaysia |
| Website: | |
Sekolah Menengah Kebangsaan Seksyen 9 is located in Section 9, Shah Alam in the state of Selangor, Malaysia.[1] [2] The school was established in 1997. The school is one of the best National Secondary School in Petaling Perdana district and the best in Shah Alam. The pupil of the school are called "Niners".