He claimed that he was inspired by the 1962 film How The West Was Won after seeing it when he was seven.
He began performing with the band Modern West in 2007. He won a Golden Globe in 2023 for his work on the hit series Yellowstone.
He married German-American model and handbag designer Christine Baumgartner on September 25, 2004. They divorced in May of 2023. He was previously married to Cindy Costner from 1978 to 1994. He has four sons and three daughters, including Annie Costner and Hayes Logan Costner.