Grosser Garten (German Großer Garten) is a large Baroque garden in Hanover, part of the heritage of the King of Hanover . It owes much of its aesthetics to Sophia of Hanover, who commissioned the French gardener Martin Charbonnier. As its name implies, it is indeed a large garden, comprising 50 hectars of lawns, hedges, walkways, and statues arranged in strict geometrical patterns. It has a renowned outdoor theater, and as a more recent addition, a water fountain.

The centerpiece of the garden used to be the castle, but this was destroyed during World War II.

The garden hosts regular displays of fireworks, usually in conjunction with concerts of classical music and occasionally military tattoos .