Kasper Klæbo Nelson (born June 1, 2000) is an Norwegian film director and actor. He is best known for his roles in Base 9 (2014). He also was Second Assistant "A" Camera, Makeup Artist and Assistant Director on the same film. He is also known for writing and directing the short film Maja/Ulrikke (2020).

He went to Sandefjord FHS were he studied film and film producton, from 2019 to 2020. His father died of suicide when Kasper was young. He says this has boosted his creativity, in an interview with the East Hill Daily.