Charles Mayer
Charles Mayer may refer to:
- Charles Mayer (actor), English stage actor
- Charles Mayer (boxer), American boxer
- Charles Mayer (composer), or Meyer, Prussian composer
- Charles Mayer (animal collector), American animal collector and plagiarist
- Charles Mayer (journalist), Canadian journalist, sportsperson and politician
- Charles Mayer (politician), Canadian businessman and politician
- Charles F. Mayer, American lawyer, Maryland state senator, and railroad director
- Charles F. Mayer (railroad president), Maryland businessman and B&O president, nephew of the above
- Charles Léopold Mayer, French biochemist and philosopher