The British Hollywood actor will be the latest star to head the 'Make Mine Milk' advertising drive to promote the drink.
Jones will appear on 2,300 double decker buses across Britain and inside magazines as part of the campaign.
Speaking about the advertisement, he said: "I need to stay lean and not eat any crap - that's why I love milk so much. It tastes great and it's good for you.
"I eat a lot of cereal and drink a lot of tea - though it's hard to find a decent cuppa in LA."
The Wanted, Gordon Ramsay, Kelly Rowland, Rupert Grint and Usher have been among the stars who have fronted the campaign in the past.
Jones recently signed up for Arnold Schwarzenegger's upcoming action project The Tomb.