The struggling Cantabrian club has axed its trainer in an effort to stave off relegation from the Primera Division.
The Cantabrian club suffered a 4-2 loss at Rayo Vallecano on Saturday and is 18th in the Primera Division table with 24 points. The team has failed to win in the league since mid-January.
Gonzalez, who took over from Hector Cuper only last November, will be succeeded by assistant coaches Fede Castano and Pablo Pinillos.
A statement on the club's official site read: "Juan Jose Gonzalez is no longer the coach of Racing.
"Until it is decided who will occupy the Racing dugout for the rest of the season, Castano and Pinillos will continue at the helm.
"We want to thank Gonzalez, who at the club's request, took on a great responsibility at a moment of extreme difficulty.
"Although it remains tough, the team continue to fight, are still alive and committed, and can still secure their top-flight status."
Racing's first game without Gonzalez will be against Barcelona at El Sardinero on Sunday.
Follow GOAL.COM USA on