| Negros Occidental National Science High School | |
| Established: | 1997 |
| Principal: | Raque A. Alayon |
| Grades: | 7 to 12 |
| Region: | Western Visayas |
| Coordinates: | 10.8894°N 123.0988°W |
| Address: | Estrella Road, Barangay XIV |
| Students: | 500+ (as of 2022-2023) |
| Nickname: | NONSHS, NONSci, SciHigh |
| School Colors: | blue, yellow |
| Newspaper: | The Scholar, Ang Iskolar |
| Affiliation: | Republic of the Philippines, Department of Education, SDO Victorias |
| Motto: | Soar High, Sci High! |
The Negros Occidental National Science High School or NONSHS is a public science high school at Estrella Road, Brgy. XIV, Victorias City, Negros Occidental, Philippines. It is a Department of Education-recognized National Science high school.
Its old name, Negros Occidental Science High School, was changed after fulfilling the qualifications and standards of a national-level secondary school. It was announced in June 2010, official resuming of classes. Major changes were applied to the school.
The Negros Occidental National Science High School (NONSHS), formerly known as Negros Occidental Science High School (NOSHS), started its active curriculum in 1997. Primary school graduates take the entrance exam in order to be admitted to the school's curriculum.
Negros Occidental National Science High School has different clubs and organizations.
The Beryllus Princeps Science Club is the premiere Science club of Negros Occidental National Science High School. It hosts events that primarily encourage Science education and collaborates with different clubs during September. The club is being advised by Madonna B. Decena and is currently headed by its president Angel Mae P. Jacob.