Question: Who wrote there's no business like show business?
Disambiguated questions and answers: question: Who wrote the song "There's No Business Like Show Business"?
Who wrote the screenplay for the film Irving Berlin's There's No Business Like Show Business?
Who wrote the original screenplay for There's No Business Like Show Business?
answer: Irving Berlin
Phoebe Ephron and Henry Ephron
Lamar Trotti
Natural Questions answer: Phoebe Ephron and Henry Ephron (from the Wikipedia article "There's No Business Like Show Business (film)")