| Belvidere North High School | |
| Streetaddress: | 9393 Beloit Road |
| City: | Belvidere |
| State: | Illinois |
| Zipcode: | 61008 |
| Country: | United States |
| Coordinates: | 42.2897°N -88.8642°W |
| District: | Belvidere Community Unit School District 100 |
| Superintendent: | Daniel Woestman [1] |
| Principal: | Jim Friesema |
| Teaching Staff: | 100.60 (FTE) |
| Schooltype: | Public Secondary |
| Grades: | 9–12 |
| Gender: | Coed |
| Campus Type: | Urban |
| Enrollment: | 1,472 (2022-23)[2] |
| Ratio: | 14.63 |
| Colors: | Navy Blue Scarlet Red Vegas Gold |
| Song: | Thundering Blue |
| Fightsong: | Thundering Blue |
| Conference: | Northern Illinois Conference (NIC-10) |
| Mascot: | Bolt |
| Nickname: | Blue Thunder |
| Newspaper: | The North View |
| Established: | 2007 |
| Footnotes: | [3] |
| Website: | School website |
Belvidere North High School is the second high school in Belvidere, Illinois and part of the Belvidere Community Unit School District 100. It is right next to Seth Whitman Elementary School and Belvidere Central Middle School.
Belvidere North's team name is Blue Thunder. They are part of the NIC-10 conference. The school's sports teams include volleyball, football, baseball, basketball, tennis, bowling, swimming, track and field, soccer, golf, cross country.