Phalaris (16 May 1913 – 28 February 1931) was a British bred Thoroughbred racehorse, later a Leading sire in Great Britain and Ireland and a Leading broodmare sire in Great Britain & Ireland. He appears in the sireline (stallion to stallion) of all racehorses which were winners of more than $10 million, as well as all yearlings that were auctioned for more than $7.5 million.