Donald Ayler (October 5, 1942 - October 21, 2007) was a jazz trumpeter and younger brother to saxophonist Albert Ayler.
Born in Cleveland Heights, Ohio, he went on to work with his brother in the mid-1960s. In 1967 Donald had what he termed a "nervous breakdown", which affected his brother's life as well. In 1970 his brother's death affected him deeply. After that he did work with a septet in Florence, but remains best known for his connection to Albert.
Ayler suffered a sudden heart attack on Sunday October 21, 2007, and died in his home in Northfield Ohio.