Hugh Grant announced the arrival of his second child with girlfriend Tinglan Hong on Twitter, E! Online said.
"And to be crystal clear. I am the Daddy."
E! Online said Hong and Grant had their first child, Tabitha, in September of 2011.
In an interview with Ellen DeGeneres last year, Grant said he enjoys parenthood.
"Everyone was right all these years, saying, 'Hugh, why don't you have some children? It changes your life,'" Grant said.
"Now that I have a child, it is life changing. I recommend it. Get some!"