Cadogan () is a name of Welsh or Irish origin and is a variant of the name Cadwgan (). Cadogan is also an anglicisation of the Irish surname Ó Ceadagáin. It may refer to:
People Cadogan (surname) Earl Cadogan, a peerage of Great Britain
Places Cadogan, Alberta, Canada Cadogan Township, Armstrong County, Pennsylvania, United States
Chelsea, London Cadogan Hall Cadogan Place Cadogan Hotel, famous for the arrest of playwright Oscar Wilde Cadogan Square
Other Cadogen West, a victim in the Sherlock Holmes story "The Adventure of the Bruce-Partington Plans" by Sir Arthur Conan Doyle Cadogan Estates, a property company Cadogan pot, a style of teapot produced by the Rockingham Pottery Cadogan Guides, a series of travel books Cadogan Chess, a publisher of chess books, now known as Everyman Chess Cadogan, Hong Kong, a private residential building in Kennedy Town, Hong Kong