Thomas O'Brien | |
|---|---|
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| District Attorney of Suffolk County | |
| In office 1922–1927 | |
| Preceded by | Joseph Pelletier |
| Succeeded by | William J. Foley |
| Personal details | |
| Born | June 19, 1887 Boston, Massachusetts, U.S. |
| Died | November 22, 1951 (aged 64) Boston, Massachusetts, U.S. |
| Political party | Democratic (Before 1935) Union (1935–1936) |
| Education | Harvard University (BA, LLB) |
Thomas Charles O'Brien (June 19, 1887 – November 22, 1951) was an American attorney and politician who served as District Attorney of Suffolk County, Massachusetts and was the United States vice-presidential nominee for the Union Party in the 1936 United States presidential election.