Per Ditlev Simonsen
- Category : 1932-births
- Type : GE
- Profile : 5/1 - Heretical / Investigator
- Definition : Split - Small (12,34,35)
- Incarnation Cross : LAX Confrontation 1
Norwegian shipowner and politician of the Conservative Party. He was a member of the Norwegian parliament 1981-1985, Minister of Defence 1989-1990, and mayor of Oslo 1995-2007.
In August 2007 Ditlev-Simonsen was forced to step down as mayor and withdraw from politics after it was revealed that he had omitted to pay wealth tax on money he had in an undisclosed Swiss bank account.
In May 2013 the city of Oslo awarded Ditlev-Simonsen the Medal of St. Hallvard, the highest award of the city, for his international work while mayor of Oslo.