Eureka, also known as Eureka O'Hara and Eureka!, is the stage name of Eureka D. Huggard (born August 26, 1990), an American drag queen and reality television personality. Eureka competed on seasons 9 and 10 of RuPaul's Drag Race. In 2021, Eureka competed on the sixth season of RuPaul's Drag Race All Stars.

Since 2020, Eureka has co-hosted We're Here on HBO alongside fellow Drag Race contestants Bob the Drag Queen and Shangela.