John Leech

John Leech may refer to:

• John Leech (caricaturist) (1817–1864), English caricaturist and illustrator
• John Leech (politician) (born 1971), British Liberal Democrat Member of Parliament
• John Leech (mathematician) (1926–1992), British mathematician, discoverer of the Leech Lattice
• John Leech (restaurateur) (1934–2009), co-founder of the Onyx Cafe
• John Henry Leech (1862–1900) British entomologist

See also

• John Leach (disambiguation)