United States v. Susan B. Anthony was the criminal trial of Susan B. Anthony in a U.S. federal court in 1873. The defendant was a leader of the women's suffrage movement who was arrested for voting in Rochester, New York in the 1872 elections in violation of state laws that allowed only men to vote. Anthony argued that she had the right to vote because of the recently adopted Fourteenth Amendment to the U.S. Constitution, part of which reads, "No State shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States."

Susan B. Anthony was an American social reformer and women's rights activist who played a pivotal role in the women's suffrage movement. Born into a Quaker family committed to social equality, she collected anti-slavery petitions at the age of 17. In 1856, she became the New York state agent for the American Anti-Slavery Society.