Jan Arnald (born 11 January 1963) is a Swedish novelist and literary critic, whose pen name is Arne Dahl. He has become famous with crime fiction, and he is also a regular writer in Swedish newspaper Dagens Nyheter.

He published Barbarer (2001) and Maria och Artur (2006) under his own name, but under his pen name he has written a series of crime novels about a fictional group of Swedish crime investigators, called "A Gruppen" in Swedish and "the Intercrime Group" in the first English translation. The books are translated into several languages. The first five books were made into 180-minute films, screened as two 90-minute episodes per story. The first, Misterioso, was screened on SVT1 in Sweden on 27 and 28 December 2011, with the following four stories shown in eight weekly instalments between October and December 2012. The series was picked up by BBC Four and screened on British television on Saturday nights as part of BBC Four's foreign crime series season starting in April 2013.

The ten Intercrime novels have all been dramatised by Swedish production company Filmlance, the first five in 2011 and the rest in 2015. Filmlance is also responsible for the series Bron (shown in the UK as "The Bridge") and for the later Martin Beck detective programmes. Each story has been dramatised in the form of a two-part miniseries, each with two ninety minute episodes (series 1) or two one hour episodes (series two).

This section of a biography of a living person does not include any references or sources. (June 2013)

• 2003 The Palle Rosenkrantz prize, for Europa Blues
• 2005 Deutscher Krimi Preis, for Upp till toppen av berget
• 2006 Deutscher Krimi Preis, for Europa Blues
• 2007 Chosen by Reader's Digest as Europe's best crime novelist
• 2007 The Swedish Crime Writing Award
• 2010 The Radio Bremen Crime Fiction Award
• 2010 Nominated to European Crime Fiction Star Award 2010/11
• 2011 Best Swedish Crime Novel Award (Bästa svenska kriminalroman) for Viskleken