Loyd Gentry Jr.

Loyd "Boo" Gentry Jr.
Personal information
Born	January 19, 1925; Covington, Kentucky, US
Died	July 1, 2012 (aged 87); Lexington, Kentucky, US
Occupation	Horse trainer
Horse racing career
Sport	Horse racing
Major racing wins
	Champagne Stakes (1954); Beldame Stakes (1955); Blue Grass Stakes (1955); Derby Trial Stakes (1955); Forerunner Stakes (1955, 1970); Kentucky Oaks (1955,1969); Princess Pat Stakes (1960); Matron Stakes (1964); Breeders' Futurity Stakes (1964); Arch Ward Stakes (1965); Bahamas Stakes (1966); Cornhusker Handicap (1966); Roamer Handicap (1967); American Classics wins:; Kentucky Derby (1967)
Significant horses
	Graustark, Proud Clarion, Lalun

Loyd "Boo" Gentry Jr. (January 19, 1925 – July 1, 2012) was an American horse trainer best known for training Proud Clarion to win the 1967 Kentucky Derby.