There are many actors who haven't won an Oscar. For 95 percent of the acting population, there is probably a good reason or two why they haven't taken home one of film's most prestigious honors. Only two actors per year can take home either the Best Actor or Best Supporting Actor Oscars, leaving the other eight nominees with nothing. And these are the best of the best. That being said, there are a number of actors who haven't won an Oscar due to stellar competition, bad luck, a snub for a great performance or a combination of all the above. It takes a talented actor to even be in the discussion for the Greatest Actor Who Has Never Won an Oscar, so while it will be surprising to see big names on this list, you shouldn't be shocked due to the scarcity of the award.
Johnny Depp, Leonardo DiCaprio and Brad Pitt are all big draws at the box office who haven't received the same respect of the Academy that they have from audiences. While they've all been nominated for Oscars, they've never taken home the big prize.
There are a surprising number of big name actors who haven't won an Oscar. It's up to you to determine which of these men is the greatest to never have won.
http://www.ranker.com/crowdranked-list/greatest-actors-who-have-never-won-an-oscar,
Brad Pitt
Clint Eastwood
Edward Norton
Gary Oldman
Harrison Ford
Ian McKellen
Johnny Depp
Leonardo DiCaprio
Liam Neeson
Ralph Fiennes