Mark Ronson and his wife of more than 5 and a half years are splitting up ... TMZ has learned.
The DJ and producer's wife -- Josephine de La Baume -- filed docs Thursday for a legal separation ... citing irreconcilable differences. She lists the date of separation as April 21.
The couple wed in September 2011. They don't have any kids together, and Josephine, a French actress, is asking for spousal support.
Ronson had a career year in 2016, winning Grammys for Record of the Year and Best Pop Group Performance with Bruno Mars for "Uptown Funk."
As she might say ... c'est la vie.
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