August Dietz (October 19, 1869 – September 26, 1963) was a philatelist, editor and publisher, who specialized in the study of mail and postal history of the Confederate States of America.

He moved to Richmond, Virginia, in the United States in 1871, and began his collecting of postage stamps in 1888.

In 1896, Dietz became the editor of The Virginia Philatelist, a monthly philatelic magazine published in Richmond.

Dietz was considered an expert in Confederate philately and wrote widely on the subject.

After 1978, the criteria were modified to include any article or publication in the field of Confederate philately.