Zorro stories have appeared in many other comic books outside of the Dell and Gold Key series, and are listed below. If you know of any other Zorro comic appearances please let me know. I hope to add information on foreign language editions at a later time.
Image Comics, 1988
This edition reprints all of the Alex Toth stories.
Reprints A Double for Diego from Four-Color #496
Reprints Diego's Dilemma from Dell Zorro #13
Reprints The Enchanted Bell from Four-Color #1003
Reprints The Señora's Gift text story from Dell Zorro #5
Reprints Gypsy Warning from Four-Color #976
Reprints The Mission of San Portolá from Four-Color #1037
Reprints The Ghost of the Mission from Four-Color #920
Zorro's Capture text story (1 page)
Reprints The Señora's Gift text story from Dell Zorro #5
Reprints A Stroke of Luck from Dell Zorro #11
This issue doesn't have a Zorro story inside, but it does have a great cover inspired by the series. Artwork by Tony Strobl.
Ghostly Confession Zorro helps save an innocent man from execution, then convinces the real killer that the framed man's ghost is back for vengeance. Artwork by Nat Edson. (5 pages)
The Golden Pendant A stolen necklace leads Zorro to a powerful man plotting against land reform. Artwork by Nat Edson. (5 pages)
Turnabout The only way to save Garcia from being demoted is to allow him to capture Zorro, who must then escape from the new commandante. Artwork by Nat Edson. (5 pages)
Masquerade Justice Don Diego attends a masquerade party dressed as Zorro to catch a dishonest tax collector. Artwork by Nat Edson. (5 pages)
Eclipse Graphic Album Series (1986)
Stories by I. Nedaud and R.l. Marcello; originally published in French in Le Journal de Mickey; English translation by Claude Elk and Frank P. Marino.
Wanted! After Monastario posts another reward for the capture of Zorro, he finds himself held for ransom by the masked avenger. (10 pages)
The Assassins Banditos plan to assassinate the governor and loot the city. (10 pages)
Double Agent Monastario forces a young woman to betray Zorro in order to save her brother from prison. (10 pages)
The Scarecrow Monastario frees a prisoner to impersonate Zorro and steal the King's gold. (10 pages)
Tight as a Noose Monastario threatens to hand Don Alejandro as a trap for Zorro. (10 pages)
The Winds of Rebellion After he announces another heavy tax, Monastario finds it would be easier to catch the winds than to catch Zorro. (9 pages)
Eclipse Graphic Album Series #25
Black-and-white reprints of:
Presenting Señor Zorro
Zorro's Secret Passage
The Ghost of the Mission
Garcia's Secret
The King's Emissary
A Bad Day for Bernardo
The Little Zorro
The Visitor
A Double for Diego
Eclipse Graphic Album Series #26
Black-and-white reprints of:
The Eagle's Brood
Gypsy Warning
The Enchanted Bell
The Marauders of Monterey
The Runaway Witness
Friend Indeed
This is another imprint from the same company behind the Gold Key issues. Also issued in 1967, they feature artwork from the Gold Key comics with slightly different covers.
Reprints Gold Key Zorro #7
Reprints Gold Key Zorro #8