Lassie (TV Series) as
Timmy Martin / Timmy Claussen
- The Wayfarers: Part 2 (1964) - Timmy Martin
- The Wayfarers: Part 1 (1964) - Timmy Martin
- The Samaritans (1964) - Timmy Martin
- Lassie and the Savage (1964) - Timmy Martin
- Hit and Run (1964) - Timmy Martin
- Bee Line (1964) - Timmy Martin
- Guide Dog (1964) - Timmy Martin
- Lassie and the Piglets (1964) - Timmy Martin
- Lassie and the Moving Mountain (1964) - Timmy Martin
- Lassie Counts Sheep (1964) - Timmy Martin
- The Disappearance: Part 5 (1964) - Timmy Martin
- The Disappearance: Part 4 (1964) - Timmy Martin
- The Disappearance (Part 2) (1964) - Timmy Martin
- The Disappearance: Part 1 (1964) - Timmy Martin
- A Challenge for Lassie (1964) - Timmy Martin
- Her Master's Voice (1964) - Timmy Martin
- Horse Thief (1964) - Timmy Martin
- Day of Darkness (1963) - Timmy Martin
- Lassie's Gift of Love: Part 2 (1963) - Timmy Martin
- Lassie's Gift of Love (Part 1) (1963) - Timmy Martin
- High Tension (1963) - Timmy Martin
- Lassie and the Winged Enemy (1963) - Timmy Martin
- The Treasure: Part 2 (1963) - Timmy Martin
- The Treasure: Part 1 (1963) - Timmy Martin
- Three Alarm (1963) - Timmy Martin
- A Time for Giving (1963) - Timmy Martin
- Jeeper (1963) - Timmy Martin
- Lassie to the Rescue (1963) - Timmy Martin
- The Agreement (1963) - Timmy Martin
- Lassie and the Bird Watch (1963) - Timmy Martin
- Eagle's Lair (1963) - Timmy Martin
- A Matter of Pride (1963) - Timmy Martin
- Silver Soldier (1963) - Timmy Martin
- Weasel Warfare (1963) - Timmy Martin
- Operation Woodland (1963) - Timmy Martin
- Lady from Nevada (1963) - Timmy Martin
- Lassie and the Rustler (1963) - Timmy Martin
- The Twister (1963) - Timmy Martin
- Project Bluebirds (1963) - Timmy Martin
- The Journey: Part 5 (1963) - Timmy Martin
- The Journey: Part 4 (1963) - Timmy Martin
- The Journey: Part 3 (1963) - Timmy Martin
- The Journey: Part 2 (1963) - Timmy Martin
- The Journey: Part 1 (1963) - Timmy Martin
- Cully's Revenge (1963) - Timmy Martin
- Lassie's Fish Story (1963) - Timmy Martin
- Swimmers (1963) - Timmy Martin
- Lassie's Lonely Burden (1963) - Timmy Martin
- A Specialist for Lassie (1963) - Timmy Martin
- Decision (1963) - Timmy Martin
- Show Dog (1962) - Timmy Martin
- A Career for Lassie (1962) - Timmy Martin
- Howling Hero (1962) - Timmy Martin
- Lassie's Ordeal (1962) - Timmy Martin
- The Nest (1962) - Timmy Martin
- Gentle Savage (1962) - Timmy Martin
- Fawn Patrol (1962) - Timmy Martin
- Deadly Goats (1962) - Timmy Martin
- Home Within a Home (1962) - Timmy Martin
- Desperate Search (1962) - Timmy Martin
- Quick Brown Fox (1962) - Timmy Martin
- Fine Feathered Friend (1962) - Timmy Martin
- Lassie and the Tiger (1962) - Timmy Martin
- Elephant Sitters (1962) - Timmy Martin
- Lassie and the Calf (1962) - Timmy Martin
- Sanctuary (1962) - Timmy Martin
- Lassie's Good Deed (1962) - Timmy Martin
- The Musher (1962) - Timmy Martin
- The Unwanted (1962) - Timmy Martin
- The Vindication of Relentless (1962) - Timmy Martin
- Lassie and the Eagle (1962) - Timmy Martin
- Eager Beaver (1962) - Timmy Martin
- Double Trouble (1962) - Timmy Martin
- The Odyssey: Part 3 (1962) - Timmy Martin
- The Odyssey: Part 2 (1962) - Timmy Martin
- The Odyssey: Part 1 (1962) - Timmy Martin
- Casey (1962) - Timmy Martin
- Bird of Prey (1962) - Timmy Martin
- The Hike (1962) - Timmy Martin
- The Partnership (1962) - Timmy Martin
- The Black Sheep (1962) - Timmy Martin
- Lassie's Protege (1962) - Timmy Martin
- The Parrot (1961) - Timmy Martin
- Yochim's Christmas (1961) - Timmy Martin
- The Dove (1961) - Timmy Martin
- The Dognappers (1961) - Timmy Martin
- Lassie's Wild Baby (1961) - Timmy Martin
- Joey (1961) - Timmy Martin
- The Pied Piper (1961) - Timmy Martin
- Lassie Adopts the Fire Chief (1961) - Timmy Martin
- The Deer (1961) - Timmy Martin
- Heat Wave (1961) - Timmy Martin
- The Winner (1961) - Timmy Martin
- The Outlaw (1961) - Timmy Martin
- The Badger Game (1961) - Timmy Martin
- The Mysterious Intruder (1961) - Timmy Martin
- The Bloodhound (1961) - Timmy Martin
- Lassie and the Grand Canyon (1961) - Timmy Martin
- Timmy and the Martians (1961) - Timmy Martin
- The Search (1961) - Timmy Martin
- Rodeo (1961) - Timmy Martin
- Lassie and the Greyhound (1961) - Timmy Martin
- Fool's Gold (1961) - Timmy Martin
- The Ostrich (1961) - Timmy Martin
- Long Chase (1961) - Timmy Martin
- The Pigeon (1961) - Timmy Martin
- Bessie (1961) - Timmy Martin
- Senor Coyote (1961) - Timmy Martin
- The Fire Watchers (1961) - Timmy Martin
- Cully's Hound Dog (1961) - Timmy Martin
- Cracker Jack (1961) - Timmy Martin
- The Eagle (1961) - Timmy Martin
- The Patriot (1961) - Timmy Martin
- Shadrack (1961) - Timmy Martin
- The Trip (1961) - Timmy Martin
- The Mad Dog (1961) - Timmy Martin
- The Wild Horse (1961) - Timmy Martin
- Apron Strings (1961) - Timmy Martin
- The White-faced Bull (1961) - Timmy Martin
- The Christmas Story (1960) - Timmy Martin
- Bows and Arrows (1960) - Timmy Martin
- The Big Race (1960) - Timmy Martin
- Little Cabbage (1960) - Timmy Martin
- Visiting Colt (1960) - Timmy Martin
- Sea Serpent (1960) - Timmy Martin
- The Swallows of Los Pinos (1960) - Timmy Martin
- The Blind Dog (1960) - Timmy Martin
- The Renegade (1960) - Timmy Martin
- The Gentle Tiger (1960) - Timmy Martin
- Feathered Menace (1960) - Timmy Martin
- The Rescue (1960) - Timmy Martin
- Cully's New Pet (1960) - Timmy Martin
- The Wallaby (1960) - Timmy Martin
- Blacktail (1960) - Timmy Martin
- The Hermit (1960) - Timmy Martin
- The Fog (1960) - Timmy Martin
- The Wrong Gift (1960) - Timmy Martin
- The Alligator (1960) - Timmy Martin
- The Moved Monument (1960) - Timmy Martin
- The Killer (1960) - Timmy Martin
- The Chase (1960) - Timmy Martin
- The Phone Hog (1960) - Timmy Martin
- Champ (1960) - Timmy Martin
- The Puppy Sitter (1960) - Timmy Martin
- Clementine (1960) - Timmy Martin
- The Elephant (1960) - Timmy Martin
- Judgement Seat (1960) - Timmy Martin
- Fur-Coated Killer (1960) - Timmy Martin
- The Epidemic (1960) - Timmy Martin
- The Explorers (1960) - Timmy Martin
- Homing Pigeon (1960) - Timmy Martin
- The Grasshopper and the Ant (1960) - Timmy Martin
- The Maverick (1960) - Timmy Martin
- The Space Traveler (1960) - Timmy Martin
- Judas Goat (1960) - Timmy Martin
- Alias Jack and Joe (1959) - Timmy Martin
- Star Reporter (1959) - Timmy Martin
- In Case of Emergency (1959) - Timmy Martin
- The Man from Mars (1959) - Timmy Martin
- The Land Grabber (1959) - Timmy Martin
- The Bounty Hunter (1959) - Timmy Martin
- The Whopper (1959) - Timmy Martin
- Water Boy (1959) - Timmy Martin
- The UNICEF Story (1959) - Timmy Martin
- The Flying Machine (1959) - Timmy Martin
- Growing Pains (1959) - Timmy Martin
- The Sulky Race (1959) - Timmy Martin
- The Mascot (1959) - Timmy Martin
- The Contest (1959) - Timmy Martin
- Old Henry (1959) - Timmy Martin
- The New Refrigerator (1959) - Timmy Martin
- Lassie's Guest (1959) - Timmy Martin
- Campout (1959) - Timmy Martin
- Swami (1959) - Timmy Martin
- Peace Patrol (1959) - Timmy Martin
- The Camera (1959) - Timmy Martin
- Stable Mates (1959) - Timmy Martin
- Teamwork (1959) - Timmy Martin
- The Charm (1959) - Timmy Martin
- Rock Hound (1959) - Timmy Martin
- The Puppet (1959) - Timmy Martin
- The Watch Dog (1959) - Timmy Martin
- The Young Flyers (1959) - Timmy Martin
- The Puppy Story (1959) - Timmy Martin
- The Bonnet (1959) - Timmy Martin
- The Cat That Came to Dinner (1959) - Timmy Martin
- The Horse Show (1959) - Timmy Martin
- Tartan Queen (1959) - Timmy Martin
- Beholden (1959) - Timmy Martin
- Timmy the Oil Millionaire (1959) - Timmy Martin
- The Tree (1959) - Timmy Martin
- The Big Cat (1959) - Timmy Martin
- Junior GIs (1959) - Timmy Martin
- The Ladybugs (1958) - Timmy Martin
- The Christmas Story (1958) - Timmy Martin
- The Raffle (1958) - Timmy Martin
- The Black Woods (1958) - Timmy Martin
- The Bundle from Britain (1958) - Timmy Martin
- The Archers (1958) - Timmy Martin
- The Egrets (1958) - Timmy Martin
- Lassie's Decision (1958) - Timmy Martin
- Our Gal (1958) - Timmy Martin
- Trapped (1958) - Timmy Martin
- Fish out of Water (1958) - Timmy Martin
- The Rocking Chair (1958) - Timmy Martin
- The Crash (1958) - Timmy Martin
- The Owl (1958) - Timmy Martin
- The Teacher (1958) - Timmy Martin
- Wishing (1958) - Timmy Martin
- The Storm (1958) - Timmy Martin
- The Sermon (1958) - Timmy Martin
- The House Guest (1958) - Timmy Martin
- The Mother (1958) - Timmy Martin
- The Crow (1958) - Timmy Martin
- The Cub Scout (1958) - Timmy Martin
- The Rabbits (1958) - Timmy Martin
- The Blanket (1958) - Timmy Martin
- Junior Firemen (1958) - Timmy Martin
- Seeing Eye Dog (1958) - Timmy Martin
- The Bird House (1958) - Timmy Martin
- The Penguin (1958) - Timmy Martin
- The Hospital (1958) - Timmy Martin
- The Hungry Deer (1958) - Timmy Martin
- Concussion (1958) - Timmy Martin
- The Garden (1958) - Timmy Martin
- The Square Dance (1958) - Timmy Martin
- Sinbad (1958) - Timmy Martin
- The Pony (1958) - Timmy Martin
- Innoculation (1958) - Timmy Martin
- The Greyhound (1958) - Timmy Martin
- The Ring (1958) - Timmy Martin
- The Business (1958) - Timmy Martin
- The Crisis (1958) - Timmy Martin
- The Baby-Sitter (1957) - Timmy Martin
- The Goose (1957) - Timmy Martin
- The Bike (1957) - Timmy Martin
- Timmy's Family (1957) - Timmy Martin
- Transition (1957) - Timmy Claussen
- The Tooth (1957) - Timmy Claussen
- The Wolf Cub (1957) - Timmy Claussen
- Happy (1957) - Timmy Claussen
- The Spartan (1957) - Timmy Claussen
- The Elephant (1957) - Timmy Claussen
- The Ballerina (1957) - Timmy Claussen
- The Raccoon (1957) - Timmy Claussen
- The Berrypickers (1957) - Timmy Claussen
- The Burro (1957) - Timmy Claussen
- Graduation (1957) - Timmy Claussen
- The Suit (1957) - Timmy Claussen
- The Runaway (1957) - Timmy Claussen