Mark Stacey (born September 23, 1964) is a British antiques dealer, valuer and auctioneer. He is also a TV personality who has made regular appearances on BBC programmes as an antique expert. He was born in Neath, South Wales and has one brother and two sisters.
Stacey moved to London from Wales and then worked for the Bonhams and Sotheby's auction houses. He then became head of Decorative Arts and later Director of Hamptons/Dreweatt Neate Fine Art.
He has made regular appearances as an antiques expert on the BBC programmes Bargain Hunt, Flog It! and Put Your Money Where Your Mouth Is. In June 2009 Stacey took part in a light-hearted interview on the BBC lunchtime programme The Daily Politics where he was asked advice about the value of items owned by famous people, in the wake of the UK Parliament's expenses scandal.