Pelorus may refer to:

Places Pelorus (Sicily), a peninsula of the island of Sicily Pelorus Island, an island in Queensland Pelorus Islet, an islet in South Australia Pelorus River, a river in the South Island of New Zealand Pelorus Sound / Te Hoiere, in the Marlborough Sounds of New Zealand Pelorus (Πέλωρος), an ancient Greek name for a river in the Caucasus region, probably the modern-day Aragvi; see Artoces of Iberia

Ships , several Royal Navy ships Pelorus (yacht), a 2001 luxury yacht , a Royal Navy cruiser class

Other Pelorus (instrument), a navigational instrument Pelorus Jack, a dolphin Pelorus Research, a trading name of Holdingham Group Limited In Greek mythology, Pelorus was one of the Spartoi