'''Dacey''' is a surname. Notable people with the surname include:
*Amy Dacey, American politician *Austin Dacey (born 1972), American philosopher, writer and activist *Gavin Dacey (born 1984), Welsh rugby union player *John Dacey (1854–1912), Australian politician *Kristian Dacey (born 1989), Welsh rugby union player *Malcolm Dacey (born 1960), Welsh rugby union player *Mark Dacey (born 1966), Canadian curler *Sebastian Dacey (born 1982), German artist
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