The Parliamentary Ombudsman of Finland has been Dr. Petri Jääskeläinen since 1 January 2010.

His third term began on 1 January 2018 when he was re-elected to continue in office for the next four-year term.

Petri Jääskeläinen acted as Deputy Ombudsman until 31 December 2009. He had assumed these duties on 1 April 2002. His second term began on 1 April 2006.

Jääskeläinen came to the Office of the Ombudsman from the Office of the Prosecutor General, where he worked as a state prosecutor and as head of the development unit. Before that he had been a researcher at the University of Helsinki and at the Office of the Chancellor of Justice as a referendary.

Ombudsman Jääskeläinen has been Secretary to the Committee on the Prosecution Service and a member of the Executive Committee of the Finnish Lawyers' Association.

His doctoral thesis examines the prosecutor as judge. He has also written presentations and articles on criminal and procedural law.