Neil D. Drysdale (born 11 December 1947, Haslemere, Surrey, England) is an American-based thoroughbred race horse trainer.
Based in Playa Del Rey, California, he has won two Triple Crown races – the Belmont Stakes (G1) with A.P. Indy in 1992 and the Kentucky Derby (G1) with Fusaichi Pegasus in 2000. He was inducted into the National Museum of Racing and Hall of Fame in 2000.
Born in Haslemere, Surrey, his father was a Royal Marine who served with the U.S. Marines in Korea. Drysdale studied at the University of Barcelona, and then taught English as a foreign language - but then switched his mind to horses.
He moved to Florida to work with show horses, and then became involved with racing thoroughbreds, spending two years with John Hartigan at Tartan Farms in Ocala, Florida. He then moved to a thoroughbred stable in Argentina, then managed a stud farm in Venezuela. Drysdale returned to the United States and worked as an assistant to Roger Laurin for two years, and then between 1970 and 1974 he was assistant to Charlie Whittingham in California. He says the most important things he learned from Whittingham were patience and planning. He began working for Corbin Robertson's Saron Stable in 1974, notably winning eight races with Bold 'n Determined in 1980 (a bicoastal Grade 1 winner between 1979 and 1981 and winner of 16 of 20 starts), including a triumph over eventual division champion Genuine Risk