Dewey Ballantine
| Headquarters | New York City, New York, United States |
|---|---|
| No. of offices | 12 before merger |
| No. of attorneys | approximately 500 before merger |
| Major practice areas | corporate law |
| Date founded | 1909 |
| Founder | Grenville Clark Francis W. Bird Elihu Root, Jr. |
| Dissolved | 2007 — merged with LeBoeuf, Lamb, Greene & MacRae to become Dewey & LeBoeuf |
Dewey Ballantine LLP was a corporate law firm headquartered in New York City. In 2007, Dewey Ballantine merged with LeBoeuf, Lamb, Greene & MacRae to form Dewey & LeBoeuf. Dewey Ballantine underwent numerous name changes throughout its history as partners left to serve in government positions or form new firms.