Guillermo Martínez (born 29 July 1962) is an Argentine novelist and short story writer.
Martínez was born in Bahía Blanca, Argentina. He gained a PhD in mathematical logic at the University of Buenos Aires.
After his degree in Argentina, he worked for two years in a postdoctoral position at the Mathematical Institute, Oxford. His most successful novel has been Crímenes Imperceptibles (Imperceptible Crimes) known as The Oxford Murders, written in 2003. In the same year, he was awarded the Planeta Prize for this novel, which has been translated into a number of languages. The book has appeared as a film in 2008, directed by Alex de la Iglesia, and starring John Hurt, Elijah Wood, Leonor Watling and Julie Cox. Most of his articles and essays (in Spanish) can be found in his personal site [1].