Dorothy DeLay (March 31, 1917 – March 24, 2002) was an American violin instructor, primarily at the Juilliard School and University of Cincinnati.
She was born in Medicine Lodge, Kansas.
Dorothy attended and graduated from Neodesha High School, where her father was the superintendent at the age of 14. In addition to teaching at Juilliard, she taught at Sarah Lawrence College, the University of Cincinnati – College-Conservatory of Music, the New England Conservatory, the Meadowmount School of Music and the Aspen Music Festival and School, among others. She began at Juilliard as a teaching assistant to the well-known violin teacher Ivan Galamian, but later established her own violin studio. DeLay studied at the Oberlin Conservatory with Raymond Cerf and transferred to Michigan State University, where she received her B.A. She went on to earn an Artist Diploma from Juilliard Graduate School.
She was also the founder of the Stuyvesant Trio (1939–42).
Dorothy DeLay died from cancer in New York City at the age of 84. She was survived by her husband, Edward Newhouse, two children, and four grandchildren.
In addition to many honorary degrees, Miss DeLay received the National Medal of Arts in 1994, the National Music Council's American Eagle Award in 1995, the Sanford Medal from Yale University in 1997 and the Order of the Sacred Treasure from the Japanese Government in 1998.