Cirrus may refer to:

Science

*Cirrus (biology), any of various thin, thread-like structures on the body of an animal *Cirrus (botany), a tendril *Infrared cirrus, in astronomy, filamentary structures seen in infrared light *Cirrus cloud, a type of cloud

Aviation

*Cirrus aero engines, a series of British aircraft engines manufactured by various companies from the 1920s to the 1950s *Cirrus Aircraft, an aircraft manufacturer in Duluth, Minnesota, USA *Cirrus Airlines, a defunct regional airline in Hallbergmoos, Germany *Cirrus (rocket), a German research rocket first launched in 1961 *Schempp-Hirth Cirrus, an Open-class sailplane *Schempp-Hirth Standard Cirrus, a Standard-class sailplane *Swing Cirrus, a German paraglider design

Music

*Cirrus (album), ''Cirrus'' (album), a 1974 release by Bobby Hutcherson *Cirrus (band), an American electronica duo *Cirrus (song), "Cirrus" (song), a 2013 instrumental by DJ Bonobo *Cirrus Minor (song), "Cirrus Minor" (song), a 1969 song by Pink Floyd

Other uses

*Chrysler Cirrus, a car produced by DaimlerChrysler between 1995 and 2000 *Cirrus (drug), a medication that contains pseudoephedrine and cetirizine *Cirrus (Helsinki building), a high-rise apartment building in Helsinki, Finland *Cirrus (Seattle building), a residential skyscraper in Seattle, Washington, USA *Cirrus (interbank network), an automated teller machine (ATM) network owned by MasterCard *Cirrus Logic, a semiconductor manufacturer *Access Database Engine, former versions of which were known as Microsoft Jet Database Engine and codenamed Cirrus *Cirrus Vodka, a vodka made in Richmond, Virginia, USA {{Disambiguation