Annette Daniels was an American mezzo-soprano opera singer. She appeared with a variety of opera companies in the United States including Houston, Dallas, San Diego, Cincinnati, Portland, and Washington, D.C. She also performed numerous oratorios as well as concert works with orchestras. 

One of her notable roles was Betty in the first production of Monticello (Spreckels Performing Arts Center). A recording of the performance was broadcast on National Public Radio and released on an audio CD.