The 'Pirates of the Caribbean' actor is set to marry his French lover Vanessa Paradis in a small ceremony at their home in the South of France next summer.
A source revealed to Britain's Daily Express newspaper: "Johnny and Vanessa are planning to finally get married next summer at their villa. It will be a private event rather than a showbiz extravaganza."
The couple have been together for eight years and have two children, Lily-Rose, seven, and four-year-old Jack. The family split their time between Los Angeles and France.
This is not the first time Johnny has been involved in wedding plans - he was engaged to actress Winona Ryer and Jennifer Grey and briefly married to musician Lori Anne Allison in 1983.
For many years Johnny was reluctant to marry again, insisting: "If you are together and you love each other and are good to each other, for all intents and purposes you are married."
Vanessa, who had a worldwide hit with 'Joe le Taxi' when she was just 14, recently revealed how special their relationship is.
She said: "Johnny is all I dreamed of. No one could love the way we love. He's a beautiful person so obviously he's a beautiful dad."