Fisher is married to American singer Carrie Underwood. They met backstage after one of Underwood's concerts in 2008. The couple became engaged on December 20, 2009. The engagement was confirmed by Fisher the next morning during the Senators' morning skate. On July 10, 2010, Fisher married Underwood at The Ritz-Carlton Lodge, Reynolds Plantation, in Greensboro, Georgia, with more than 250 people in attendance. Underwood surprised Fisher by having one of their favourite artists, Brandon Heath, sing his song "Love Never Fails" for their first dance. It was announced on September 1, 2014, that Fisher and Underwood were expecting their first child together. In February 2015, Underwood gave birth to their first child, a son. In January 2019, she gave birth to their second son.