Henry Martyn Hoyt Jr. (December 5, 1856 – November 20, 1910) served as Solicitor General of the United States from 1903 to 1909. His father, also named Henry Martyn Hoyt, served as governor of Pennsylvania from 1879 to 1883. Hoyt was born on December 5, 1856 in Wilkes-Barre, the son of Henry Martyn Hoyt, the governor of Pennsylvania from 1879 to 1883. He graduated from Yale University in 1878 and the law school of the University of Pennsylvania in 1881. After a career spent in private practice as a lawyer in Pennsylvania, starting in Pittsburgh and then in banking he became an Assistant Attorney General in 1897. In 1903, he was appointed Solicitor General by Theodore Roosevelt. After the end of Roosevelt's term in office he became a counselor to Secretary of State Philander C. Knox.