William "Bill" Edgar (born 1944 in Wilmington, North Carolina) is an American apologist and was professor of apologetics at Westminster Theological Seminary.

Between 1970 and 1978, he taught at the Brunswick School in Greenwich, Connecticut, and 1979–89 at the Faculté Libre de Théologie Réformée, in Aix-en-Provence, France, where he continues as Professeur Associé.

He is president of the Huguenot Fellowship Director of the Gospel & Culture Project and serves on the Institutional Review Board and the Medical Ethics Committee of the Chestnut Hill Hospital.

[4] In his books and articles, Edgar has treated topics such as cultural apologetics, the music of Brahms, the Huguenots, and African-American aesthetics.

In 2007, it was recorded live on a double-CD, Heaven in a Nightclub, during a benefit concert for Chesterton House, a Center for Christian Studies at Cornell University.

The concert and recording feature Edgar, vocalist Ruth Naomi Floyd, saxophonist Joe Salzano, and bassist John Patitucci.