Sportsmen
- John Walsh (American football) (born 1972), Brigham Young University starting quarterback
- John Walsh (baseball) (1879–1947), Major League player
- John Walsh (rugby league), rugby league footballer of the 1970s for Great Britain, England, and St Helens RLFC
- Johnny Walsh (footballer) (born 1957), Irish former soccer player
- Johnny Walsh (hurler), 19th-century Irish athlete aka Seán Breathnach
- Jack Walsh (cricketer) (1912–1980), Australian cricketer
- Jack Walsh (Gaelic footballer), Gaelic footballer for Kerry
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