Leser v. Garnett, 258 U.S. 130 (1922), was a case in which the Supreme Court of the United States held that the Nineteenth Amendment was constitutional.

To have their names removed from the list of qualified voters, Oscar Leser and others brought suit against the two women on the sole grounds that they were women, arguing that they were not eligible to vote because the Constitution of Maryland limited suffrage to men[3] and the Maryland legislature had refused to vote to ratify the Nineteenth Amendment.

The Supreme Court granted certiorari to decide "Whether the Nineteenth Amendment has become part of the US Constitution."

The plaintiffs disputed the constitutionality of the amendment through three claims: In a unanimous decision, written by Justice Louis Brandeis, the court addressed each objection in turn.

In response to the first objection, the court declared that since the Fifteenth Amendment had been accepted as valid for more than fifty years, and dealt with a similar matter (in this case, that voting rights could not be denied on account of race), it could not be argued that the new amendment was invalid due to its subject matter.