Cirrus may refer to:

Science Cirrus (zoology), 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), a 1974 release by Bobby Hutcherson Cirrus (band), an American electronica duo "Cirrus" (song), a 2013 instrumental by DJ Bonobo "Cirrus", a 1996 song by Joe Morris from Elsewhere "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 Cirrus Mountain, a mountain in Alberta Mount Cirrus. a mountain in Colorado