Cosh may refer to:
People Chris Cosh (born 1959), American football coach James Cosh (1838–1900), Scottish-Australian missionary and academic, father of Thomas Frame Cosh John Cosh (1915–2005), British rheumatologist Thomas Frame Cosh (1868–1946), Australian architect
Science, technology, and mathematics cosh (mathematical function), hyperbolic cosine, a mathematical function with notation cosh(x) -COSH, a representation of the thiocarboxylic acid functional group in chemistry Chlorpromazine, an antipsychotic drug ChromeOS Shell, an operating system designed by Google
Weaponry Baton (law enforcement) Club (weapon) Cosh (weapon)
See also COSHH (Control of Substances Hazardous to Health Regulations 2002), a set of UK regulations Kosh (disambiguation) Chemical cosh, describing a sedative drug Cosh Boy, a 1953 British film Harry and Cosh, a British children's television series