| Leo P. O'Brien | |
|---|---|
| Member of the Wisconsin Senate from the 2nd district |
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In office 1953–1965 |
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| Preceded by | Fred F. Kaftan |
| Succeeded by | Robert W. Warren |
| Personal details | |
| Born | July 20, 1893 Fond du Lac, Wisconsin |
| Died | March 25, 1968 (aged 74) Green Bay, Wisconsin |
| Political party | Republican |
| Profession | Insurance Salesman |
Leo P. O'Brien (July 20, 1893 – March 25, 1968) was a member of the Wisconsin State Senate from the 2nd District.
O'Brien was born on July 20, 1893 in Fond du Lac, Wisconsin. He attended the University of Wisconsin-Madison, Marquette University and St. Norbert College. During World War I and World War II, he served with the United States Navy. He died in 1968 of a heart attack.
O'Brien was a member of the Senate from 1953 to 1964. He was a Republican.