The saxophonist has split from Balynda Helene Benson-Gorelick after 20 years of marriage, citing irreconcilable differences.
Kenny - full name Kenneth Bruce Gorelick - is seeking joint custody of their 14-year-old son, Noah, and his filing states he doesn`t want to pay spousal support. The couple also have another son, Max, who is 17.
The 45-year-old musician - who is worth an estimated $50 million - also indicated in his divorce papers, filed on August 9, that he and Balynda have a pre-nuptial agreement.
The couple have been apart since January, when Balynda filed for a legal separation. Divorce lawyer Laura Wasser - who has previously acted for Kim Kardashian, Britney Spears and Christina Aguilera - is representing Kenny.
Kenny is one of the most prominent and successful smooth jazz musicians of all time, and holds the world record for playing the longest note ever recorded on a saxophone - 45 minutes and 47 seconds.
As well as his instrumental solo albums, he has also collaborated with the likes of Whitney Houston, Frank Sinatra and Andrea Bocelli.