| Pentti Arajärvi | |
| Office: | Spouse of the President of Finland |
| President: | Tarja Halonen |
| Term Label: | In role |
| Term Start: | 1 March 2000 |
| Term End: | 1 March 2012 |
| Predecessor: | Eeva Ahtisaari |
| Successor: | Jenni Haukio |
| Birth Date: | 2 June 1948 |
| Birth Place: | Helsinki, Finland |
| Party: | Social Democratic Party of Finland |
| Children: | 1 |
| Alma Mater: | University of Helsinki |
| Occupation: | Doctor of Law |
Dr. Pentti Ilkka Olavi Arajärvi (born 2 June 1948, Helsinki) is a Finnish Doctor of Law, Professor Emeritus and Docent of the University of Helsinki,[1] [2] a former civil service official and a Social Democratic politician from Helsinki.[3] Arajärvi was awarded the honorary title of valiokuntaneuvos ("Committee Counselor") for his work in parliamentary committees. He is the spouse of Tarja Halonen, who was the President of Finland between 2000 and 2012.
Arajärvi was elected to the Helsinki City Council in the 2012 municipal elections.
On 26 August 2000, after a relationship of more than fifteen years, Arajärvi married his longtime partner, Tarja Halonen, who was at the time the President of Finland, in a civil ceremony at her official residence, Mäntyniemi. The couple has no children. Arajärvi has an adult son from a previous relationship.
Finland: Grand Cross of the Order of the White Rose
Belgium: Grand Cross of the Order of the Crown
Estonia:[4] 
Iceland: Grand Cross of the Order of the Falcon[5]
Latvia: Commander Grand Cross of the Order of the Three Stars
Luxembourg: Grand Cross of the Order of Adolphe of Nassau[6]
Portugal: Grand Cross of the Order of Prince Henry
