Pops executive Paul Jan Zdunek says Hamlisch will lead four Rose Bowl concerts between June 18 and Aug. 27.
The 65-year-old entertainer has won three Oscars, four Grammys, four Emmys, a Tony and three Golden Globes. He also won a Pulitzer Prize for his show "A Chorus Line."
Hamlisch is also known for "They're Playing Our Song" and wrote the film scores for "The Way We Were," "The Sting" and "Sophie's Choice."
He arrives at an economically challenging time for the Pasadena Symphony and Pops and following the departure of the group's top two conductors.
The Pasadena Symphony Association was founded in 1928 as the Pasadena Civic Orchestra.