Slaney is a surname.
Notable people with this surname include:
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Geoffrey Slaney (1922–2016), British surgeon and academic
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Ivor Slaney (1921–1998), England musical composer and conductor
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John Slaney (born 1972), Canadian ice hockey player
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Malcolm Slaney, American electrical engineer
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Richard Slaney (born 1956), British discus thrower
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Robert Aglionby Slaney (1791–1862), British barrister and politician
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Robert Slaney (ice hockey) (born 1988), Canadian ice hockey player
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Stephen Slaney (died 1608), English politician
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Thomas Slaney (1852–1935), English footballer and manager
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Mary Decker (married name Mary Slaney; born 1958), American middle-distance runner
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Philip Kenyon-Slaney (1896–1928), British politician
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William Kenyon-Slaney (1847–1908), English sportsman, soldier and politician