Hurley, 45, filed papers Friday at London's High Court, citing "unreasonable behavior."
Four months ago, Hurley announced her split from Nayar on Twitter after she was photographed kissing Australian cricket player Shane Warne.
Hurley and Nayar, an Indian textile heir, married in March 2007 after dating for four years. The former model has an 8-year-old son, Damian, from a previous relationship with millionaire Stephen Bing.
Hurley recently shot the pilot for NBC's Wonder Woman.