The Girls Aloud singer made the announcement that she had tied the knot with Jean-Bernard Fernandez-Versini on July 7.
In a statement on her website the X Factor judge said: "I usually do not discuss my personal life but to stop the speculation I want to share my happy news...Jean-Bernard and I married on 7/7/14. We are very happy and excited to move forward with our lives together."
The 31-year-old posted a close-up picture of her wedding ring alongside the statement.
It has been reported the couple married on a beach on the island of Mustique with just four guests in attendance including Cheryl's mother Joan Callaghan, but the singer did not give any details about the ceremony.
Cheryl was previously been married to footballer Ashley Cole but they divorced in 2010.
Her marriage to the 33-year-old French restaurateur, who she is said to have been dating for just three months, comes shortly after she revealed in a magazine interview that she felt like she was having a nervous breakdown last year.
The star told the August issue of Elle Magazine that, following her very public sacking from X Factor USA, she "wasn't well in the head".
''I can talk about this because I'm OK about it now," she said. "But I went through hell and it literally drove me mad.
''It only hit me at the beginning of 2013 that I'd completely lost myself. I'd look in a mirror and think: 'Who the hell is she?'
"Something was seriously wrong: it felt like a nervous breakdown. I had to stop, get out of my life I'd been living and find myself again. The consequences if I didn't were just too frightening.''
The singer said she is in a much happier place now.
"'I'm just enjoying finding out who I am. That's good enough right now... I know I'm really lucky because none of what I've been through broke me.
''It actually taught me everything I'm going to need for the rest of my life. I love feeling that I'm strong because I have good women at my side. And I don't give a f**k what people think any more.''