Guy Haley (born June 6, 1973) is an English writer of speculative fiction, predominantly known for his Richards & Klein Investigations series, as well as numerous fiction contributions to various Warhammer 40,000 series.
Haley has contributed over 30 works to the greater Warhammer universe, with another 50 works to the following Warhammer 40,000, Warhammer Fantasy (setting), and Warhammer Age of Sigmar series
