Jonah Hill has kept his relationship with Olivia Millar low-key. Hill and Millar have been together since 2022, eventually welcoming two kids together. "I have two kids now," Hill told Interview magazine in an April 2026 profile. "The only thing that could ever separate me from my family is the editing room. I love the writing, I love the shooting, but editing ... [is] like dessert every day, even the problems are dessert." Hill did not immediately reveal the sexes or names of his children.