The 49-year-old country star and Kidman, also 49, attended the 2017 Academy of Country Music Awards in Las Vegas.
Urban and Kidman looked the picture perfect couple as they laughed, kissed and whispered while posing for photos. The pair married in 2006, and share two daughters, 8-year-old Sunday and 6-year-old Faith.
"When my daughters do this......I've ALREADY WON!!!! - KU #ACMawards," Urban captioned a photo of his daughters with a "Good Luck Daddy" sign prior to the ceremony.
Urban performed two songs at the awards show -- "Blue Ain't Your Color" and "The Fighter" -- which both appear on his ninth studio album, Ripcord. "The Fighter," which features Carrie Underwood, was inspired by Kidman.
"I remember when he first played it for me, and I started to cry because ... he writes these things -- they come out of I don't know -- and they're like beautiful gifts," the Big Little Lies actress told People on the red carpet.
Urban was nominated for seven awards, including Entertainer of the Year and Male Vocalist of the Year, but lost to Jason Aldean and Thomas Rhett, respectively. Female Vocalist of the Year winner Miranda Lambert and boyfriend Anderson East were among the other couples at the awards show.