Gardet is a French surname. Notable people with the surname include:

• Cyrille Gardet (born 1990), French ski mountaineer
• Georges Gardet (1863–1939), French sculptor and animalier
• Louis Gardet (1904–1986), French Roman Catholic priest and historian

Gärdet (The Afford) is a part of Stockholm east and northeast of Östermalm. Its official name is Ladugårdsgärdet. It is renowned for its large number of modernist apartments. Gärdet is one of the largest residential districts built in Stockholm during the 1930s, built from 1929 until around 1950, and houses about 10,000 people.