Season 2 title card
The second season of Lost in Space consisted of 30 episodes (one more than the previous season) and aired from September 14, 1966 through April 26, 1967.
Season 2 episodes[]
| Title | Episode | Prodno. | Original Airdate |
| Blast Off Into Space | 2x01 / 30 of 83 | 9501 | September 14, 1966 |
| Wild Adventure | 2x02 / 31 of 83 | 9502 | September 21, 1966 |
| The Ghost Planet | 2x03 / 32 of 83 | 9503 | September 28, 1966 |
| Forbidden World | 2x04 / 33 of 83 | 9504 | October 5, 1966 |
| Space Circus | 2x05 / 34 of 83 | 9505 | October 12, 1966 |
| The Prisoners of Space | 2x06 / 35 of 83 | 9506 | October 19, 1966 |
| The Android Machine | 2x07 / 36 of 83 | 9507 | October 26, 1966 |
| The Deadly Games of Gamma 6 | 2x08 / 37 of 83 | 9508 | November 2, 1966 |
| The Thief from Outer Space | 2x09 / 38 of 83 | 9509 | November 9, 1966 |
| Curse of Cousin Smith | 2x10 / 39 of 83 | 9510 | November 16, 1966 |
| West of Mars | 2x11 / 40 of 83 | 9512 | November 30, 1966 |
| A Visit to Hades | 2x12 / 41 of 83 | 9513 | December 7, 1966 |
| Wreck of the Robot | 2x13 / 42 of 83 | 9514 | December 14, 1966 |
| The Dream Monster | 2x14 / 43 of 83 | 9511 | December 21, 1966 |
| The Golden Man | 2x15 / 44 of 83 | 9515 | December 28, 1966 |
| The Girl from the Green Dimension | 2x16 / 45 of 83 | 9516 | January 4, 1967 |
| The Questing Beast | 2x17 / 46 of 83 | 9517 | January 11, 1967 |
| The Toymaker | 2x18 / 47 of 83 | 9518 | January 25, 1967 |
| Mutiny in Space | 2x19 / 48 of 83 | 9519 | February 1, 1967 |
| The Space Vikings | 2x20 / 49 of 83 | 9520 | February 8, 1967 |
| Rocket to Earth | 2x21 / 50 of 83 | 9522 | February 15, 1967 |
| The Cave of the Wizards | 2x22 / 51 of 83 | 9525 | February 22, 1967 |
| Treasure of the Lost Planet | 2x23 / 52 of 83 | 9521 | March 1, 1967 |
| Revolt of the Androids | 2x24 / 53 of 83 | 9524 | March 8, 1967 |
| The Colonists | 2x25 / 54 of 83 | 9526 | March 15, 1967 |
| Trip Through the Robot | 2x26 / 55 of 83 | 9527 | March 22, 1967 |
| The Phantom Family | 2x27 / 56 of 83 | 9528 | March 29, 1967 |
| The Mechanical Men | 2x28 / 57 of 83 | 9523 | April 5, 1967 |
| The Astral Traveler | 2x29 / 58 of 83 | 9529 | April 12, 1967 |
| The Galaxy Gift | 2x30 / 59 of 83 | 9530 | April 26, 1967 |
Background information[]
The series began to be filmed in color this season (previously, only the SFX shots were shot in color, though presented in black and white). It was in direct competition with ABC's Batman television series, and echoes that show's campiness. The stories were more fantasy oriented than in the first season, and many of the episodes featured Dr. Smith, Will and the robot, almost to the exclusion of everyone else.
Mark Goddard's comments on the second season include: "I was involved in stories and dialogue that could only be written by writers and story editors who must have been eating colorful mushrooms while sipping colorless drinks. This imbibing turned one of them into a colorless, dour, vindictive, hateful person. I am referring to Don Richardson, who directed twelve of the " Lost in Space" episodes that year."'