| Lambertseter Upper Secondary School | |
| Native Name: | Lambertseter videregående skole |
| Streetaddress: | Cecilie Thoresens vei 6 |
| Headmaster: | Siv Jacobsen |
| Staff: | 100 |
| Schooltype: | Public secondary school |
| Grades: | 11–13 |
| Age Range: | 16–19 |
| Campus: | Suburban |
| Founded: | 1961 |
| Students: | 855 |
| Homepage: | https://lambertseter.vgs.no/ |
Lambertseter Upper Secondary School (Norwegian: Lambertseter videregående skole) is a public upper secondary school located in the district of Nordstrand in Oslo, Norway. The school was established in 1961 and offers general academics (the college preparatory studiespesialisering of the Norwegian school system) and sports studies. The school also has a special section for severely multihandicapped students. It currently has a total of about 855 students and 100 employees.