Josef Mareš (born 25 February 1964) is a Czech screenwriter and former police officer.

He was the head of the homicide department of the regional directorate of the Police of the Czech Republic in Prague.

He is the co-author of the scripts for the television series Případy 1. oddělení, Nineties and Docent.

[4] He worked at the homicide department from 1992 until 30 November 2019,[5] when he retired to civilian life[6] after disagreements with his superior Radka Drexlerová.

[1] In 2001–2006, he was the head of the 1st department of the Prague murder party, then he served as deputy commander of the Criminal Police and Investigation Service (2006–2009).