LOS ANGELES — Sound the trumpets: 20th Century Fox, a name and klieg-lit logo that stretches back 85 years in Hollywood, is dropping the word Fox, a move that may prevent consumers from mistakenly thinking the movie studio has anything to do with Rupert Murdoch’s polarizing Fox News media empire.

The Walt Disney Company bought most of Mr. Murdoch’s entertainment assets last year in a $71.3 billion deal. That included the 20th Century Fox studio and its art-house sibling, Fox Searchlight. On Friday, employees at the main movie studio arrived to a new email format (@20thcenturystudios) without the Fox. A Disney spokesman confirmed that both labels, now officially known as 20th Century Studios and Searchlight Pictures, would drop Fox from their logos. Disney had no further comment.

“Downhill,” a comedic drama starring Will Ferrell and Julia Louis-Dreyfus, will be the first movie to bear the Searchlight Pictures name. It arrives in theaters on Feb. 14. “The Call of the Wild,” set for release on Feb. 21 and starring Harrison Ford, will carry the 20th Century logo. The trumpet fanfare (composed by Alfred Newman in 1933), klieg lights and familiar monolith logo will remain.

It is not surprising that Disney would rename the movie operations. In October, 20th Century Fox Television, a small-screen studio that Disney bought as part of the deal, became part of a new entity, Disney Television Studios.