Van Diemen is a British race car manufacturer.
It may also refer to:
People Anthony van Diemen, Dutch colonial governor Patrick van Diemen, a Dutch football player
Places Van Diemen Gulf, а gulf in Australia Van Diemen's Land, the former name for Tasmania Van Diemen Strait, also known as Osumi Strait, separating Kyushu from the Nansei Islands
See also Cape Maria van Diemen Van Diemen's Land (disambiguation)