John Roche may refer to:John A. Roche (1844–1904), Chicago politician John Roche (politician) (1848–1914), Irish politician John Roche (detective) (1905–1940), Garda Síochána detective John Roche (actor) (1893–1952), American actor John Roche (basketball), retired American professional basketball player John Roche (martyr), Irishman, one of the English Martyrs executed in 1588, beatified in 1992 Johnny Roche (1932–1988), English footballer Jack Roche, Australian convicted on a charge of conspiring to destroy the Israeli Embassy in Canberra, Australia Jack Roche (baseball) (1890–1983), Major League Baseball catcher John Roche (bishop) (1584–1636), Irish Roman Catholic bishop John Francis Roche, American serial killer, burglar, and rapist John Roche (1834–1893), member of the Legislative Council of Quebec John Roche (scientist), appointed in 2025 as the Prime Minister's Chief Science Advisor

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