Tobias Picker (born July 18, 1954) is an American composer, director, and pianist.
Picker, after studying with the American rationalist triumvirate Charles Wuorinen, Elliott Carter, and Milton Babbitt, became noted for his orchestral works Old and Lost Rivers and The Encantadas, his operas Emmeline, Fantastic Mr. Fox, Thérèse Raquin, An American Tragedy and Dolores Claiborne, and his ballet Awakenings (based on the book by Oliver Sacks), among many other works.