Special guest stars
Don Adams – Himself (in "The Exterminator")
Eddie "Rochester" Anderson - Bobby Joe Mason (in "The Ghostly Creep from the Deep", "The Loch Ness Mess", and "The Mystery of Haunted Island")
John Astin – Gomez Addams (in "Wednesday Is Missing")
Joe Besser – Babu (in "Mystery in Persia")
Daws Butler – Larry and Curly Joe (in "Ghastly Ghost Town" and "The Ghost of the Red Baron")
Ted Cassidy – Lurch (in "Wednesday Is Missing")
Sonny & Cher – Themselves (in "The Secret of Shark Island")
Tim Conway – Himself (in "The Spirit Spooked Sports Show")
Jackie Coogan – Uncle Fester (in "Wednesday Is Missing")
Scatman Crothers - Meadowlark Lemon (in "The Ghostly Creep from the Deep", "The Loch Ness Mess", and "The Mystery of Haunted Island")
Phyllis Diller – Herself (in "A Good Medium Is Rare")
Robert DoQui - Pablo Robertson (in "The Ghostly Creep from the Deep", "The Loch Ness Mess", and "The Mystery of Haunted Island")
Sandy Duncan – Herself (in "Sandy Duncan's Jekyll and Hyde")
Dick Van Dyke – Himself (in "The Haunted Carnival")
Cass Elliot – Herself (in "The Haunted Candy Factory")
Richard Elkins - J.C. "Gip" Gipson (in "The Ghostly Creep from the Deep", "The Loch Ness Mess", and "The Mystery of Haunted Island")
Jodie Foster – Pugsley Addams (in "Wednesday Is Missing")
Stu Gilliam - Curly Neal (in "The Ghostly Creep from the Deep", "The Loch Ness Mess", and "The Mystery of Haunted Island")
Larry Harmon – Stan Laurel (in "The Ghost of Bigfoot"), Ghost of Bigfoot (in "The Ghost of Bigfoot")
Pat Harrington – Moe (in "Ghastly Ghost Town" and "The Ghost of the Red Baron")
Cindy Henderson – Wednesday Addams (in "Wednesday Is Missing")
Don Knotts – Himself (in "Guess Who's Knott Coming to Dinner?" and "The Spooky Fog of Juneberry")
Carolyn Jones – Morticia Addams (in "Wednesday Is Missing")
Davy Jones – Himself (in "The Haunted Horseman of Hagglethorn Hall")
Jim MacGeorge - Oliver Hardy (in "The Ghost of Bigfoot")
Julie McWhirter - Jeannie
Jerry Reed – Himself (in "The Phantom of the Country Music Hall")
Olan Soule – Batman (in "The Dynamic Scooby-Doo Affair" and "The Caped Crusader Caper")
Janet Waldo – Granny Frump (in "Wednesday Is Missing") and Josie (in "The Haunted Showboat")
Johnny Williams - Geese Ausby (in "The Ghostly Creep from the Deep", "The Loch Ness Mess", and "The Mystery of Haunted Island")
Jonathan Winters – Himself (in "The Frickert Fracas"), Maude Frickert (in "The Frickert Fracas")
