Graikas is a mountain village in the municipal unit of Skillounta, Elis, Greece. In 2001 its population was 406. It is situated on a hillside, 3 km southeast of Gryllos, 8 km southeast of Krestena and 9 km northeast of Zacharo. The Greek National Road 76 passes north of the village. Graikas suffered damage from the 2007 Greek forest fires.

Greka Energy, currently also known as HVI Cat Canyon Inc. is a private United States oil and gas company operating principally in southern and central California, centered on Santa Barbara County. Formed in 1999 after acquisition and merger of several smaller firms, it is a subsidiary of Greka Integrated, Inc., a holding company headquartered in Santa Maria, California, and is wholly owned by Randeep Grewal. The United States operations of Greka consist of four units: Greka Oil & Gas, Alexi Realty, Santa Maria Refining Company, and Rincon Island Limited Partnership. They focus on petroleum extraction and asphalt processing in California, with holdings in Santa Barbara, Ventura, Kern, and Orange Counties. As of 2009, they had approximately 200 employees, and were the largest onshore oil operator in Santa Barbara County. In May 2011, Greka changed its name to HVI Cat Canyon Inc.