The Cessna Citation is a marketing name used by Cessna

Cessna

The Cessna Aircraft Company is an airplane manufacturing corporation headquartered in Wichita, Kansas, USA. Their main products are general aviation aircraft. Although they are the most well known for their small, piston-powered aircraft, they also produce business jets. The company is a subsidiary...

 for its line of business jet

Business jet

Business jet, private jet or, colloquially, bizjet is a term describing a jet aircraft, usually of smaller size, designed for transporting groups of up to 19 business people or wealthy individuals...

s. Rather than one particular model of aircraft, the name applies to several "families" of turbofan

Turbofan

The turbofan is a type of airbreathing jet engine that is widely used for aircraft propulsion. A turbofan combines two types of engines, the turbo portion which is a conventional gas turbine engine, and the fan, a propeller-like ducted fan...

-powered aircraft that have been produced over the years. Within each of the six distinct families, aircraft design improvements, market pressures and re-branding efforts have resulted in a number of variants, so that the Citation lineage has become quite complex.