What is the name of the character played by Anne Hathaway in Interstellar?

The character played by Anne Hathaway in Interstellar is Dr. Amelia Brand.

Dr. Brand is a NASA scientist and one of the principal members of the Endurance mission, which travels through a wormhole near Saturn to search for a habitable world. She is the daughter of Professor John Brand, played by Michael Caine, who leads NASA's effort to save humanity.

Amelia is responsible for evaluating potential planets and helping establish a human colony. Her personal connection to Edmunds, one of the earlier Lazarus mission astronauts, creates a conflict between scientific judgment and emotional loyalty. That tension becomes especially important when the crew chooses between Mann's planet and Edmunds' planet.

A common mix-up is Murph, Cooper's daughter, who becomes a NASA scientist later in the story. Romilly and Dr. Mann are also Endurance-related characters, but neither is played by Hathaway. Hathaway's performance as Amelia Brand is central to the film's themes of love, sacrifice, survival, and scientific responsibility.