| Thaddeus M. Machrowicz | |
| Office: | Judge of the United States District Court for the Eastern District of Michigan |
| Term Start: | September 7, 1961 |
| Term End: | February 17, 1970 |
| Appointer: | John F. Kennedy |
| Predecessor: | Frank Albert Picard |
| Successor: | Cornelia Groefsema Kennedy |
| State1: | Michigan |
| District1: | 1st |
| Term Start1: | January 3, 1951 |
| Term End1: | September 18, 1961 |
| Predecessor1: | George G. Sadowski |
| Successor1: | Lucien Nedzi |
| Birth Date: | 21 August 1899 |
| Birth Place: | Gostyń, Posen, Prussia (now Poland) |
| Death Place: | Bloomfield Township, Michigan, U.S. |
| Resting Place: | Mount Olivet Cemetery Detroit, Michigan, U.S. |
| Party: | Democratic |
| Education: | Detroit College of Law (LL.B.) |
Thaddeus Michael Machrowicz (August 21, 1899 – February 17, 1970) was a United States representative from Michigan and later was a United States district judge of the United States District Court for the Eastern District of Michigan.
Born in Gostyń in Prussia's Province of Posen (in modern-day Poland), Machrowicz immigrated to the United States with his parents in 1902 and the family settled in Chicago, Illinois, later moving to Milwaukee, Wisconsin. He was naturalized as a Citizen of the United States in 1910. He attended a parochial school in Milwaukee. He then attended Alliance College in Cambridge Springs, Pennsylvania from 1912 to 1916, and the University of Chicago in 1917. During the First World War, he served as a lieutenant in the Polish Army of American Volunteers in Canada, France and Poland from 1917 to 1920. He served with the American Advisory Commission to Polish Government in 1920 and 1921 and also acted as war correspondent with Floyd Gibbons in Poland from 1919 to 1921. He attended De Paul University in 1921. He received a Bachelor of Laws from Detroit College of Law (now Michigan State University College of Law) in 1924 and was admitted to the Michigan Bar the same year. He was in private practice of law in Detroit, Michigan, from 1924 to 1934. He was city attorney of Hamtramck, Michigan, from 1934 to 1936. He was legal director of the Michigan Public Utilities Commission from 1938 to 1939. He returned to private practice in Hamtramck from 1939 to 1942. He was a municipal judge for Hamtramck from 1942 to 1950. He was a delegate to the Democratic National Convention from Michigan in 1952 and 1956.[1]
Machrowicz was elected as a Democrat to the 82nd Congress and to the five succeeding Congresses and served from January 3, 1951, to September 18, 1961, when he resigned to accept appointment to the federal bench.
Machrowicz was nominated by President John F. Kennedy on August 25, 1961, to a seat on the United States District Court for the Eastern District of Michigan vacated by Judge Frank Albert Picard. He was confirmed by the United States Senate on September 1, 1961, and received his commission on September 7, 1961.[1] His service was terminated on February 17, 1970, due to his death in Bloomfield Township, Oakland County, Michigan. He was interred in Mount Olivet Cemetery in Detroit.