| Office: | Minister of Education and Church Affairs |
| Term Start: | 6 March 1923 |
| Term End: | 24 November 1923 |
| Primeminister: | Otto B. Halvorsen Abraham Berge |
| Predecessor: | Martin Olsen Nalum |
| Successor: | Karl Sanne |
| Office2: | Member of the Norwegian Parliament |
| Term Start2: | 1 January 1901 |
| Term End2: | 31 December 1906 |
| Constituency2: | Søndre Bergenshus[1] |
| Birth Date: | 19 November 1855 |
| Birth Place: | Lindås, Hordaland, Sweden-Norway |
| Death Place: | Kristiania, Norway |
| Spouse: | Anna Løvås[2] |
| Party: | Conservative |
Ivar Bergersen Sælen (19 November 1855 – 24 November 1923) was a Norwegian politician from the Conservative Party who served as Minister of Education and Church Affairs from March 1923 until his death in November the same year.
Sælen was born at Åsgard in Lindås, where his father was a farmer and builder. In 1863, the family moved to the farm Sælen in the Fyllingsdalen in Fana. He attended Sogndal Folk High School before becoming a farmer at Sælen in 1877.
He was the mayor of Fana from 1908–1910 and again from 1914–1916. He was elected to the Storting from Søndre Bergenhus county for the 1901–1906 term and met as deputy representative for Wollert Konow from Midthordland in Søndre Bergenhus county from 1910–1912. Sælen then served as Minister of Education and Church Affairs from 6 March 1923 until his death on 24 November the same year.
In 1979, a bust of Sælen by Nils Aas, was erected in Fyllingsdalen.