Duane Morris LLP is a law firm headquartered in Philadelphia, Pennsylvania.

The firm was founded in 1904 as Duane, Morris, Heckscher, & Roberts,[2] and has offices in the United States, London, Singapore, Vietnam, Oman, Myanmar, Shanghai, and Taiwan.

[3] In addition to legal services, Duane Morris has independent affiliates in other disciplines.

In total, 28 Duane Morris practice groups were nationally ranked.

[3][7] In January 2020, Duane Morris reached a merger agreement with Satterlee Stephens.