Ferrisaurus is a genus of leptoceratopsid ceratopsian dinosaur from the Sustut Basin (Tango Creek Formation) in British Columbia, Canada.

It was discovered in 1971 during a uranium and thorium exploration by Kenny F. Larsen and was donated to the Dalhousie University in 2004.

It was described but not named in 2008;[1] by then it made its way into the collection of the Royal British Columbia Museum in Victoria.

[2] The holotype, RBCM P900, nicknamed Buster,[3] includes portions of the pectoral girdles, left forelimb, left hindlimb, and right pes.

[2] The name Ferrisaurus is derived from Latin ferrum (=iron) and Greek sauros (=lizard), referencing to the specimen's discovery along a railway line.