•
John Walsh (American scientist), associate professor of physiology •
John Walsh (art historian) (born 1937), Director of the J. Paul Getty Museum, 1983–2000 •
John Walsh (artist) (born 1954), New Zealand painter •
John Walsh (dentist) (1911–2003), New Zealand dentist and academic •
John Walsh (filmmaker), British director •
John Walsh (Medal of Honor) (1841–1924), Irish-born Union Army soldier during the American Civil War •
John Walsh (printer) (1665/66–1736), and his son John Walsh (1709–1766), music publishers •
John Walsh (scientist) (1726–1795), British scientist and Secretary to the Governor of Bengal •
John Walsh (television host) (born 1945), host of ''America's Most Wanted'' •
Johnny Walsh (gang member) (1852–1883), New York City gangster •
John A. Walsh, American sports journalist, executive editor of ESPN •
John C. Walsh, American writer and director •
John Evangelist Walsh (1927–2015), American writer and historian •
John F. Walsh (born 1961), United States Attorney for the District of Colorado, 2010–2016 •
John G. Walsh (born 1950), American economist and acting Comptroller of the Currency •
John Henry Walsh (1810–1888), English writer on sport under the pseudonym of "Stonehenge" •
John P. Walsh (sociologist), professor of public policy at Georgia Institute of Technology •
John Prendergast Walsh (1798–1867), Irish-born soldier who served in the Battle of Waterloo •
John W. Walsh (1949–2017), American non-profit leader and patient advocate • John Christopher Walsh, appellant in the
Christy Walsh case in Northern Ireland ==See also==