Johnson married businesswoman, IFBB professional bodybuilder, and producer Dany Garcia on May 3, 1997. Their daughter, Simone, was born on August 14, 2001. They announced they were splitting up amicably on June 1, 2007. The divorce was finalized in May 2008. Johnson then began dating Lauren Hashian, the daughter of Boston drummer Sib Hashian. They first met in 2006 while Johnson was filming "The Game Plan". They were married in Hawaiʻi on August 18, 2019. They have two daughters named Jasmine (born December 17, 2015) and Tiana (born April 17, 2018). They reside in Los Angeles, with a farm in Virginia and a second home in Southwest Ranches, Florida.