Season 3 Episode
- Season 3 Condemned of Space
- Season 3 Visit to a Hostile Planet
- Season 3 Kidnapped in Space
- Season 3 Hunter's Moon
- Season 3 The Space Primevals
- Season 3 Space Destructors
- Season 3 The Haunted Lighthouse
- Season 3 Flight into the Future
- Season 3 Collision of Planets
- Season 3 Space Creature
- Season 3 Deadliest of the Species
- Season 3 A Day at the Zoo
- Season 3 Two Weeks in Space
- Season 3 Castles in Space
- Season 3 The Anti-Matter Man
- Season 3 Target: Earth
- Season 3 Princess of Space
- Season 3 Time Merchant
- Season 3 The Promised Planet
- Season 3 Fugitives in Space
- Season 3 Space Beauty
- Season 3 The Flaming Planet
- Season 3 The Great Vegetable Rebellion
- Season 3 Junkyard in Space
Lost in Space - Season 3 Episode 1 Condemned of Space
7.10 60 minutes The beginning of the third season finds the Robinsons having to quickly leave the planet they are on, which is a similar plot to the beginning of the second season. Once in space, the robot is swept overboard and has to be rescued. Then the Robinsons find a prison ship filled with cryogenically preserved prisoners. The prisoners have been interred past their normal sentences due to a malfunctioning timepiece on the prison ship. Professor Robinson repairs the timepiece and frees the prisoners. Robby the Robot makes another appearance, threatening Professor Robinson and Major West.
