The studio has finalised a "family friendly" PG-13 version of the Oscar-winning royal drama and will debut it in 1,000 cinemas on April 1.
The Weinstein Company initially released the royal drama in the US with an R certificate, but removed instances of profanity in order to attain the PG-13 rating and open the film up to a larger audience.
Eric Lomis, President of Theatrical Distribution and Home Entertainment for TWC, said: "We are thankful to the MPAA for their wisdom and swift action in approving the release of The King's Speech PG-13 release.
"The action enables those to whom it speaks most directly - young people who are troubled by stuttering, bullying and similar trials - to see it."
King's Speech stars Colin Firth, Geoffrey Rush and director Tom Hooper all voiced their objections to cutting material from the film.