kalil's father, frank, was a center at arkansas and arizona, and was drafted by the buffalo bills in 1982, before playing for the usfl's arizona wranglers in 1983 and houston gamblers in 1984. his brother ryan was an all-american at southern california, and also plays for the new york jets. their sister danielle sang the national anthem at the vikings–panthers game, which featured both of her brothers, on october 13, 2013.