| Thaddeus M. Buczko | |
| Justice of the Essex County Probate and Family Court | |
| Term Start: | February 4, 1981 |
| Term End: | 1996. |
| Nominator: | Edward J. King |
| Title2: | 19th Massachusetts Auditor |
| Term Start2: | September 24, 1964 |
| Term End2: | February 1981 |
| Governor2: | Endicott Peabody John Volpe Francis Sargent Michael Dukakis Edward J. King |
| Successor2: | John J. Finnegan |
| Title3: | Member Massachusetts House of Representatives 10th Essex District |
| Term Start3: | 1959 |
| Term End3: | 1964[1] |
| Predecessor3: | John E. Murphy |
| Successor3: | Michael J. Harrington |
| Title4: | Member of the Salem, Massachusetts City Council |
| Birth Date: | 23 February 1926 |
| Birth Place: | Salem, Massachusetts |
| Death Place: | Salem, Massachusetts |
| Nationality: | American |
| Party: | Democratic |
| Rank: | Colonel, Major |
| Allegiance: | United States of America |
| Branch: | United States Navy |
| Battles: | World War II Korean War |
| Awards: | Meritorious Service Medal, 1975, Legion of Merit, 1979, U.S. Army |
| Alma Mater: | Norwich University, 1947 Boston University Law School, 1951 |
| Profession: | Attorney |
Thaddeus M. Buczko (February 23, 1926 – March 7, 2021) was an American politician who served as a Salem, Massachusetts city councillor, a member of the Massachusetts House of Representatives and as Massachusetts Auditor.[2] Additionally, from 1981 to 1996, Buczko served as a justice of the Essex County Probate and Family Court; Buczko, retired in 1996.[2]
He died on March 7, 2021, in Salem, Massachusetts, at age 95.[3]