Carl Benjamin Boyer (1906-1976) was a historian of mathematics. He wrote the books History of Analytic Geometry, History of the Calculus, A History of Mathematics, and The Rainbow: From Myth to Mathematics.

He married the former Marjorie Duncan Nice.

On April 21, 1976, he died of a heart attack in New York.

The Carl B. Boyer Memorial Prize is awarded to the Columbia University undergraduate writing the best essay on any scientific or mathematical topic.

He was the grandfather of Daniel C. Boyer.