Wrigley Field is a Major League Baseball (MLB) stadium on the North Side of Chicago, Illinois. It is the home of the Chicago Cubs, one of the city's two MLB franchises. It first opened in 1914 as Weeghman Park for Charles Weeghman's Chicago Whales of the Federal League, which folded after the 1915 baseball season. The Cubs played their first home game at the park on April 20, 1916, defeating the Cincinnati Reds 7–6 in 11 innings. Chewing gum magnate William Wrigley Jr. of the Wrigley Company acquired the Cubs in 1921. It was named Cubs Park from 1920 to 1926, before being renamed Wrigley Field in 1927. The stadium currently seats 41,649 people and is the second stadium to be named Wrigley Field, as a Los Angeles ballpark with the same name opened in 1925.

In the North Side community area of Lakeview in the Wrigleyville neighborhood, Wrigley Field is on an irregular block bounded by Clark and Addison streets to the west and south, and Waveland and Sheffield avenues to the north and east. Wrigley Field is nicknamed "The Friendly Confines", a phrase popularized by "Mr. Cub", Hall of Fame shortstop and first baseman Ernie Banks. The oldest park in the National League, it is the second-oldest in the majors after Fenway Park (1912), and the only remaining Federal League park. The park was designated a National Historic Landmark in 2020.

Wrigley Field is notable for various features, including its ivy-covered brick outfield wall, the distinctive wind patterns off Lake Michigan, the iconic red marquee over the main entrance, and the hand-turned scoreboard. The stadium is situated in a primarily residential neighborhood without parking lots, and spectators have views from the rooftops behind the outfield. Additionally, it is the last Major League park to have lights installed for night games, in 1988. From 1921 to 1970, the stadium was also home to the Chicago Bears of the National Football League, and from 1931 to 1938, it was the home of the Chicago Cardinals (now the Arizona Cardinals) of the National Football League. The elevation of its playing field is 600 feet (180 m) above sea level.