Alonzo Dillard Folger (July 9, 1888 – April 30, 1941) was a Democratic U.S Congressman, serving one term from North Carolina between 1939 and 1941.

Born in Dobson, North Carolina, Folger attended public schools in Surry County and attended the University of North Carolina at Chapel Hill.

From 1932 to 1938, he was a trustee of the University of North Carolina, and was named to the state's Superior Court in 1937.

As a Democrat, he was elected to the 76th United States Congress in 1938 and re-election to the 77th U.S. Congress in 1940, but his second term was cut short by his death in a car accident in Mount Airy on April 30, 1941.

In a special election, his brother John Hamlin Folger was chosen to succeed him on Congress.