Pär-Ola Jonas Jonasson (born Per Ola Jonasson; 6 July 1961)[1] is a Swedish journalist and writer, best known as the author of the best-seller The Hundred-Year-Old Man Who Climbed Out the Window and Disappeared.

[2] The son of an ambulance driver and a nurse, Jonasson was born and raised in Växjö in southern Sweden.

[3] After studying Swedish and Spanish at the University of Gothenburg, Jonasson worked as a journalist for the Växjö newspaper Smålandsposten, and for the Swedish evening tabloid Expressen, where he remained until 1994.

[3] In 2007, he completed his first book The Hundred-Year-Old Man Who Climbed Out the Window and Disappeared.

[6] Jonasson's second novel, about an orphan from Soweto who by chance becomes involved in international politics, was released on 25 September 2013: Jonasson's third novel, which begins with a chance meeting between a hotel desk clerk, a released prisoner and a former priest was released on 23 September 2015: Jonasson's fourth novel, The Accidental Further Adventures of the Hundred-Year-Old Man, was published in 2018.