| Iver C. Ranum High School | |
| Motto: | Push to excel, prepare to succeed |
| Established: | 1961-2010 |
| Type: | public secondary school |
| District: | Adams County School District 50 |
| Grades: | 9-12 |
| Principal: | Mr. Evnas |
| Enrollment: | 500 |
| Athletics: | 4-A |
| Colors: | Green, gold, and white |
| Mascot: | Raider |
| Campus Type: | open |
| Campus Size: | 4+ acres |
| Streetaddress: | 2401 W 80th Ave |
| City: | Westminster |
| State: | Colorado |
| Zipcode: | 80221 |
| Country: | United States |
| Website: | http://westminsterpublicschools.org/ranum |
Iver C. Ranum High School was a public secondary school operated by Adams County School District 50 near Westminster, Colorado, United States, from 1961 to 2010. The high school was located in the Sherrelwood neighborhood in Adams County. It was named in honor of Iver Ranum, Superintendent of Adams County School District 50 from 1950 to 1975. The last class of Ranum High School graduated on May 8, 2010. The high school has been replaced by the new Westminster High School.
The building that housed Iver C. Ranum High School currently houses Iver C. Ranum Middle School.
58% of Ranum's students received free/reduced lunch.[1]
The school offered the International Baccalaureate program.