Dargate Auction Galleries is a full-service auction located in Pittsburgh, Pennsylvania. The firm was founded in the 1980s by Edward Darnell. In 1989, Darnell sold the business to Larry and Carol Farley, who in turn sold it to Paul Novosel and Dan Zivko in 2002. In 2005, Novosel retired and Mr. Zivko purchased full ownership.

Dargate offers art, books, furniture, and numerous other items, mostly from estates in western Pennsylvania.