John Horgan may refer to:
- John Horgan (Australian politician) (1834–1907), Australian politician, Western Australia MLC;
- John Horgan (Canadian politician), Canadian politician, British Columbia NDP MLA
- John Horgan (American journalist) (born 1953), American science journalist
- John Horgan (political psychologist) (born 1974), Irish political psychologist
- John G. Horgan (1871–1921), billards
- John Horgan (academic) (born 1940), Irish Press Ombudsman, former journalist, Labour Party politician and professor
- John Horgan (hurler) (born 1950), former Irish sportsperson who played hurling with Cork
- John Horgan (Irish nationalist) (1881–1967), Irish politician from Cork
- John Horgan (Irish politician) (1876–1955), Irish politician from Cork
Famous quotes containing the words john and/or horgan:
“But I’m his poor shepherd, as plain you may see,
That am come to beg pardon for him and for me.””
—Unknown. King John and the Abbot of Canterbury (l. 99–100)
“Irony differentiates. Cynicism never does.”
—Paul Horgan (b. 1903)