The 21 actors who have gotten the most Oscar nominations without winning one

Each year, deserving actors and actresses lose out in the Oscars' best acting categories.

But there are a handful of great actors that the Academy has repeatedly nominated and proceeded to repeatedly neglect.

Amy Adams has lost five times at the Oscars for five captivating roles, most recently with her first best actress nomination for 2013's "American Hustle."

But some all-time greats like Glenn Close, Richard Burton, and Peter O'Toole have had it even worse.

Here are the 21 actors who have been nominated for at least four Oscars without winning once: