Irving Sidney "Duke" Jordan was an American jazz pianist.

Sheila Jordan is an American jazz singer and songwriter. She has recorded as a session musician with an array of critically acclaimed artists in addition to recording her own albums. Jordan pioneered a bebop and scat jazz singing style with an upright bass as the only accompaniment. Jordan's music has earned praise from many critics, particularly for her ability to improvise lyrics; Scott Yanow describes her as "one of the most consistently creative of all jazz singers." Charlie Parker often introduced Jordan as "the lady with the million dollar ears."