Lon Chaney (63 Confirmed)
-13 Demon Street (Episodes 1, 3 & 4) (Confirmed by Merrik)
-Abbott & Costello: 2 Hour Colgate (also in the system as Who's on First) (Confirmed by CalebAndCo)
-Abbott & Costello Meet Frankenstein (Confirmed by Danae Cassandra)
-Albuquerque (Confirmed by Merrik)
-The Alligator People (Confirmed by Merrik)
-Battles of Chief Pontiac (Confirmed by Merrik)
-Behave Yourself! (Confirmed by Merrik)
-Big House, U.S.A. (Confirmed by Merrik)
-The Black Castle (Confirmed by smiller02)
-The Black Sleep (Confirmed by gardibolt)
-Bride of the Gorilla (Confirmed by Merrik)
-The Bushwhackers (Confirmed by Merrik)
-Calling Dr. Death (Confirmed by Danae Cassandra)
-Casanova’s Big Night (Confirmed by smiller02)
-Cobra Woman (Confirmed by ateo357)
-The Cyclops (Confirmed by Merrik)
-Daniel Boone, Trail Blazer (Confirmed by smiller02)
-Dead Man’s Eyes (Confirmed by Danae Cassandra)
-The Defiant Ones (Confirmed by smiller02)
-The Devil’s Messenger (Confirmed by Merrik)
-Dracula vs. Frankenstein (Confirmed by Merrik)
-Flame of Arabia (Confirmed by JOHNNYV)
-Frankenstein Meets the Wolf Man (Confirmed by Merrik)
-The Frozen Ghost (Confirmed by Merrik)
-Gallery of Horros: The Wade Williams Collection (Spark of Life) (Confirmed by gardibolt)
-The Ghost of Frankenstein (Confirmed by Merrik)
-The Haunted Palace (Confirmed by Danae Cassandra)
-Have Gun – Will Travel: The Complete Second Season (Confirmed by Merrik)
-Have Gun – Will Travel: The Sixth Season (Cast Not Yet Entered) (Confirmed by Merrik)
-Here Come the Co-Eds (Confirmed by Danae Cassandra)
-High Noon (Confirmed by Merrik)
-Hillbillys in a Haunted House (Confirmed by Merrik)
-House of Dracula (Confirmed by Merrik)
-House of Frankenstein (Confirmed by Merrik)
-Indestructible Man (Confirmed by Merrik)
-The Indian Fighter (Confirmed by Merrik)
-Johnny Reno (Confirmed by ateo357)
-Hawkeye & the Last of the Mohicans Vol. 1 (Confirmed by SoylentDave)
-Hawkeye & The Last of the Mohicans Vol. 2 (Confirmed by SoylentDave)
-Hawkeye & The Last of the Mohicans Vol. 3 (Confirmed by SoylentDave)
-Manfish (Confirmed by Merrik)
-The Monkees: Season 1 (Ep. 7) (Confirmed by gardibolt)
-The Mummy’s Curse (Confirmed by Merrik)
-The Mummy’s Ghost (Confirmed by Merrik)
-The Mummy’s Tomb (Confirmed by Merrik)
-My Favorite Brunette (Confirmed by Merrik)
-Not as a Stranger (Confirmed by Merrik)
-Only the Valiant (Confirmed by Merrik)
-Pardners (Confirmed by Merrik)
-Passion (1954) (Confirmed by Merrik)
-Pillow of Death (Confirmed by Danae Cassandra)
-Rawhide: The First Season (Confirmed by Rutan)
-Route 66: Super Series Volume 1 (Lizard’s Leg and Owlet’s Wing) (Confirmed by gardibolt)
-Son of Dracula (Confirmed by Merrik)
-Spider Baby or, The Maddest Story Ever Told (Confirmed by Merrik)
-Springfield Rifle (Confirmed by smiller02)
-Strange Confession (Confirmed by Danae Cassandra)
-Tales of Tomorrow (TV) (Confirmed by smiller02)
-Wanted: Dead or Alive: Season 2 (Ep. 43) (Confirmed by Rutan)
-Weird Woman (Confirmed by Danae Cassandra)
-Welcome to Hard Times (Confirmed by Merrik)
-Witchcraft (1964) (Confirmed by Merrik)
-The Wolf Man (Confirmed by Merrik)

Lon Chaney Jr. (3 Confirmed)
-13 Demon Street (Episode 2) (Confirmed by Merrik)
-Into the Night (1985) (Confirmed by Lewis_Prothero)
-The Shadow of Silk Lennox (Confirmed by Merrik)

Lon Chaney, Jr. (19 Confirmed)
-Ace Drummond, Vol. 1: Classic Movie Serials (Confirmed by Merrik)
-Ace Drummond, Vol. 2: Classic Movie Serials (Confirmed by Merrik)
-Billy the Kid (1941) (Confirmed by Merrik)
-Charlie Chan in City in Darkness (Confirmed by scotthm)
-Frontier Marshal (Confirmed by smiller02)
-Jesse James (Confirmed by scotthm)
-Man Made Monster (Confirmed by smiller02)
-Mr. Moto’s Gamble (Confirmed by smiller02)
-North West Mounted Police (Confirmed by Merrik)
-Of Mice and Men (1939) (Confirmed by Merrik)
-The Old Corral (Confirmed by Merrik)
-Overland Mail (All Chapters) (Confirmed by Merrik)
-Riders of Death Valley (Confirmed by Rutan)
-A Scream in the Night (Confirmed by smiller02)
-Secret Agent X-9 (1937) (Confirmed by Rutan)
-The Singing Cowboy (Confirmed by Merrik)
-Terror in the Tropics (2005) (Confirmed by gardibolt)
-Undersea Kingdom (Confirmed by gardibolt)
-Union Pacific (Confirmed by Merrik)

Creighton Chaney (4 Confirmed)
-Bird of Paradise (Confirmed by smiller02)
-Desert Command (Confirmed by Merrik)
-Lucky Devils (Confirmed by JOHNNYV)
-The Three Musketeers (1933) (Confirmed by gardibolt)

Lon Chaney Jr (0 Confirmed) (Non-existent credit, it's for an Australian Profile of The Wolf Man, which he's actually credited as Lon Chaney)

6 Unconfirmed Credits

Golden Age Theater: Volume 3: Classic TV Series (The Golden Junkman)
Heroes of Horror (1995)
I Died a Thousand Times
The Last Frontier (1932)
A Lion is in the Streets
Money, Women and Guns

Invalid Credits
Dracula (1931)
Fractured Flickers: The Complete Collection (Ep 1.5) (this is Lon Chaney Sr.)
Frankenstein (1931)
The Howling (1981)
The Most Dangerous Game (Confirmed by Rizor)
Mystery Volume 1 (Shriek in the Night - Also contains A Scream in the Night, which is what he should credited under)
The Thirsty Dead/The Swamp of the Ravens (as Host)
Van Helsing (2004)

Money, Women and Guns : Lon Chaney
Openingcredits @0:35 at YouTube.