The Mark of Zorro is the title of three films based on the novel The Curse of Capistrano by Johnston McCulley, which introduced the character of Zorro:

• The Mark of Zorro, a silent film starring Douglas Fairbanks released in 1920
• The Mark of Zorro, a film starring Tyrone Power released in 1940
• The Mark of Zorro, a television movie starring Frank Langella released in 1974

In addition, The Curse of Capistrano was itself re-published under the title The Mark of Zorro following the success of the 1920 film.

You might also be thinking of:

• The Mask of Zorro, a film starring Anthony Hopkins and Antonio Banderas released in 1998