Cecil B. Ferguson (August 27, 1883 – September 5, 1943) was an American professional baseball player.
He was a right-handed pitcher over parts of six seasons (1906–1911) with the New York Giants and Boston Doves/Rustlers. During his career, he compiled a 29–46 record in 142 appearances, with a 3.34 earned run average and 298 strikeouts.
After his baseball career, Ferguson became an osteopathic doctor, and gave medical treatment to many Major League baseball players. He graduated with a Doctor of Osteopathic Medicine (D.O.) from the Kirksville College of Osteopathic Medicine. Ferguson was also the coach of the baseball team at the American School of Osteopathy.
Ferguson died in Montverde, Florida, aged 60.