Cirrus may refer to:

Science[edit]

• 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[edit]

• 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[edit]

• 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[edit]

• 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