Buchanan Ingersoll & Rooney
| Headquarters | Union Trust Building Pittsburgh, Pennsylvania |
|---|---|
| No. of offices | 18 |
| No. of attorneys | approximately 525 |
| Major practice areas | Lobbying, general practice |
| Key people | Joseph A. Dougherty, CEO |
| Date founded | 1850 in Pittsburgh |
| Founder | Moses Hampton |
| Company type | Professional corporation except in California, where it is organized as an LLP |
| Website | bipc.com |
Buchanan Ingersoll & Rooney PC is an American law firm and lobbying group based in Pittsburgh, Pennsylvania. The firm has more than 450 lawyers in offices in 15 U.S. cities. As of 2022, Buchanan Ingersoll is the third-largest law firm in Pittsburgh by number of attorneys in its Pittsburgh office.