John C. Kleczka
Wisconsin Circuit Judge for the 2nd Circuit, Branch 6
In office April 4, 1930 – January 1, 1953
Appointed by	Walter J. Kohler Sr.
Preceded by	Edward T. Fairchild
Succeeded by	Francis X. Swietlik
Member of the U.S. House of Representatives from Wisconsin's 4th district
In office March 4, 1919 – March 3, 1923
Preceded by	William J. Cary
Succeeded by	John C. Schafer
Member of the Wisconsin Senate from the 8th district
In office January 4, 1909 – January 6, 1913
Preceded by	Julius Edward Roehr
Succeeded by	Alexander E. Martin
Personal details
Born	May 6, 1885 Milwaukee, Wisconsin, U.S.
Died	April 21, 1959(1959-04-21) (aged 73) Milwaukee, Wisconsin, U.S.
Resting place	Saint Adalberts Cemetery, Milwaukee
Political party	Republican
Spouse	Wanda H. Kleczka
Alma mater	Marquette University

John Casimir Kleczka (May 6, 1885 – April 21, 1959) was a Polish American lawyer, judge, and Republican politician from Milwaukee, Wisconsin. He was a member of the United States House of Representatives for the 66th and 67th congresses, and was the first Polish American elected to congress. He later served as a Wisconsin circuit court judge in Milwaukee County for nearly 23 years.

Born in Milwaukee, Wisconsin, Kleczka attended the parochial schools. He was graduated from Marquette University, Milwaukee, Wisconsin, in 1905. He took postgraduate courses at Catholic University at Washington, D.C., and at the University of Wisconsin–Madison, studying law. He was admitted to the bar in 1909 and commenced practice in Milwaukee.

He served in the Wisconsin State Senate 1909–1913.^[1] He served as delegate to the Republican National Convention in 1912. He served as commissioner of the circuit court of Milwaukee County 1914–1918. He was a major judge advocate in the United States Army Reserves after the First World War.

Kleczka was elected as a Republican to the Sixty-sixth and Sixty-seventh congresses (March 4, 1919 – March 4, 1923) as the representative of Wisconsin's 4th congressional district, after taking the Republican nomination away from incumbent William J. Cary, who had been one of 50 representatives who voted against declaring war on Germany.^[2] He did not seek renomination in 1922 but returned to the practice of law.

After retirement, Kleczka was elected circuit court judge in 1930 and served until his retirement due to ill health in 1953. He was appointed a conciliation judge and court commissioner by the circuit judges in 1957 and served until his death.

He died in Milwaukee, Wisconsin, April 21, 1959.^[3] He was interred in St. Adalbert's Cemetery.

• United States Congress. "John C. Kleczka (id: K000260)". Biographical Directory of the United States Congress.