| Party: | Labour Party |
| Office: | deputy representative to the Parliament of Norway |
| Term: | 1913 - 1915 |
Theodor Olsen Aaset (3 July 1862 – ??) was a Norwegian politician for the Labour Party.
He was born at Aaset in Grue as a forester's son. He worked as a carpenter and smallholder in Grue. In 1904 he was elected to the executive committee of Grue municipal council, and during the term 1913 - 1915 he served as a deputy representative to the Parliament of Norway from the constituency Solør.[1] When regular representative August Embretsen died in late 1914,[2] Aaset took his seat in Parliament.[3]