Robert or Bob Marx may refer to:

• Robert F. Marx (1933–2019), underwater archaeologist, treasure hunter, and author
• Robert Marx (fencer) (born 1956), American Olympic fencer

• Robert Marks (disambiguation)
• Marx (surname)

Topics referred to by the same term

This disambiguation page lists articles about people with the same name.
If an internal link led you here, you may wish to change the link to point directly to the intended article.