Giles v. Harris, 189 U.S. 475 (1903), was an early 20th-century United States Supreme Court case in which the Court upheld a state constitution's requirements for voter registration and qualifications. Although the plaintiff accused the state of discriminating in practice against black citizens, the Court found that the requirements applied to all citizens and refused to review the results "in practice," which it considered overseeing the state's process. as there was no stated intent in law to disfranchise blacks, the Court upheld the state law.
The African-American educator Booker T. Washington secretly arranged for funding and representation for Jackson W. Giles in this lawsuit and the ensuing Giles v. Teasley (1904). He worked extensively behind the scenes to direct and raise funds for other lawsuits and segregation challenges as well.