The former Bond baddie's actress wife, Jennifer Birmingham Lee, gave birth to their son, Cash Yun Lee, on Monday evening (03Jun13) in Los Angeles.
Breaking the news to fans via Twitter.com, the new mum writes, "Monday was easily the best day of our lives! Baby Cash has arrived!!! We can't be happier! Absolutely floating!"
Lee, who is set to appear as the villain opposite Hugh Jackman in The Wolverine, adds, "The best day of our life is the arrival of our baby boy."
The couple wed in 2010.