American Family Field is a retractable roof stadium in Milwaukee, Wisconsin. Located southwest of the intersection of Interstate 94 and Brewers Boulevard, it is the home ballpark of Major League Baseball's Milwaukee Brewers. It opened in 2001 as a replacement for Milwaukee County Stadium. The stadium was previously called Miller Park as part of a $40 million naming rights deal with Miller Brewing Company, which expired at the end of 2020.

A retractable roof is a roof system designed to roll back the roof of a structure so that the interior of the facility is open to the outdoors. Retractable roofs are sometimes referred to as operable roofs or retractable skylights. The term operable skylight, while quite similar, refers to a skylight that opens on a hinge, rather than on a track.