Ivars Grantiņš (born 1972), known as The Ceraukste Maniac (Latvian: Ceraukstes Maniaks), is a Latvian serial killer and rapist who murdered three people, including his daughter, in a two-month killing spree in 2008. The brutality of his crimes and his subsequent manhunt became notorious in the country, and he was subsequently convicted and sentenced to life imprisonment for them.