| Thomas James McAvoy | |
| Office: | Senior Judge of the United States District Court for the Northern District of New York |
| Term Start: | September 17, 2003 |
| Office1: | Chief Judge of the United States District Court for the Northern District of New York |
| Term Start1: | 1993 |
| Term End1: | 2000 |
| Predecessor1: | Neal Peters McCurn |
| Successor1: | Frederick Scullin |
| Office2: | Judge of the United States District Court for the Northern District of New York |
| Term Start2: | March 4, 1986 |
| Term End2: | September 17, 2003 |
| Appointer2: | Ronald Reagan |
| Predecessor2: | Seat established by 98 Stat. 333 |
| Successor2: | Gary L. Sharpe |
| Birth Place: | Johnson City, New York, U.S. |
| Education: | Villanova University (AB) Albany Law School (JD) |
Thomas James McAvoy (born September 17, 1938) is a senior United States district judge of the United States District Court for the Northern District of New York.
McAvoy was born in Johnson City, New York and graduated from Villanova University with an Artium Baccalaureus degree in 1960 and Albany Law School with a Juris Doctor in 1964. A Republican, McAvoy was a practicing attorney in Binghamton, New York from 1964 to 1985. He was a member of the Broome County Legislature from 1971 to 1986.
McAvoy was recommended for a judicial appointment by Senator Al D'Amato. On January 29, 1986 he was nominated by President Ronald Reagan to the United States District Court for the Northern District of New York, to a new seat created by 98 Stat. 333. He was confirmed by the United States Senate on March 3, 1986, and received his commission on March 4, 1986. McAvoy served as chief judge from 1993 to 2000. He assumed senior status on September 17, 2003.