Which actor refused his Oscar?

Several actors have refused or not accepted their Oscar, but the most famous examples are George C. Scott and Marlon Brando. George C. Scott refused his Best Actor Oscar for Patton in 1971, saying he did not want to be part of a meat market and that he disliked the competitive nature of awards, calling the ceremony a two-hour meat parade. He had also refused a Best Supporting Actor nomination for The Hustler earlier. Marlon Brando famously refused his Best Actor Oscar for The Godfather in 1973 to protest Hollywood's portrayal of Native Americans, and he sent Native American activist Sacheen Littlefeather to the stage to decline the award on his behalf and read a statement. Other notable refusals include Dudley Nichols who refused Best Screenplay for The Informer in 1936 due to union disputes, though he later accepted it. More recently, some winners have not attended or have made political statements but did not formally refuse the statue. The most iconic and frequently cited answer to which actor refused his Oscar is Marlon Brando, followed closely by George C. Scott, both of whom took a principled stand against the industry.