Cozen O'Connor
| Headquarters | One Liberty Place Philadelphia, Pennsylvania |
|---|---|
| No. of offices | 34 |
| No. of attorneys | 1,000+ |
| Revenue | US$708.1 Million (2024) |
| Profit per equity partner | US$1.2 Million (2024) |
| Date founded | 1970 |
| Founder | Stephen A. Cozen Patrick J. O'Connor |
| Company type | Professional corporation |
| Website | cozen.com |
Cozen O'Connor P.C. is a multinational law firm headquartered in Philadelphia, Pennsylvania, with offices in New York City, Washington, D.C., Minneapolis, Chicago, and Los Angeles.
Founded in 1970, it has expanded to more than 1,000 lawyers in 34 offices across North America and Europe. The firm was 77th on the Am Law 100 rankings of the largest 100 U.S. law firms by revenue in 2025, and 95th on the Global 200 in 2025.