William Thomas Waggoner (August 31, 1852 – December 11, 1934) was an American rancher, oilman, banker, horsebreeder and philanthropist from Texas.

He established the Arlington Downs and paid for the construction of three buildings on the campus of Texas Woman's University.

[1] His paternal grandfather, Solomon Waggoner (1804 - 1849), had been a cattleman, farmer, and horse and slave trader.

[2] In 1869, when he was only eighteen years old, his father gave him US$12 and asked him to drive five thousand steers to Abilene, Kansas.

[2][3] Waggoner also used part of the Big Pasture in Oklahoma, which he leased from Comanche Chief Quanah Parker.

[3] In 1905, alongside rancher Samuel Burk Burnett, he went wolf-hunting with President Theodore Roosevelt on the Big Pasture.

[3] As he grew older, Waggoner decided to subdivide his ranch holdings and give a portion to each of his children.

As a result, by 1909, he divided the Waggoner Ranch into four subsections: one for him (White Face); and three smaller 8,500 acre sub-ranches for his children: Zacaweista, Four Corners, and Santa Ros.

Their best result came in 1929 when their colt Panchio ran third under future U. S. Racing Hall of Fame jockey Frank Coltiletti.