Season 1[]
Land of the Giants season 1, 26 episodes:
| Title | Episode | Prodno. | Original Airdate |
| The Crash | 1x01 / 1 of 51 | 2401 | September 22, 1968 |
| Ghost Town | 1x02 / 2 of 51 | 2414 | September 29, 1968 |
| Framed | 1x03 / 3 of 51 | 2408 | October 10, 1968 |
| Underground | 1x04 / 4 of 51 | 2411 | October 20, 1968 |
| Terror-Go-Round | 1x05 / 5 of 51 | 2416 | November 3, 1968 |
| The Flight Plan | 1x06 / 6 of 51 | 2410 | November 10, 1968 |
| Manhunt | 1x07 / 7 of 51 | 2407 | November 17, 1968 |
| The Trap | 1x08 / 8 of 51 | 2403 | November 24, 1968 |
| The Creed | 1x09 / 9 of 51 | 2409 | December 1, 1968 |
| Double-Cross | 1x10 / 10 of 51 | 2412 | December 8, 1968 |
| The Weird World | 1x11 / 11 of 51 | 2402 | December 22, 1968 |
| The Golden Cage | 1x12 / 12 of 51 | 2405 | December 29, 1968 |
| The Lost Ones | 1x13 / 13 of 51 | 2406 | January 5, 1969 |
| Brainwash | 1x14 / 14 of 51 | 2415 | January 12, 1969 |
| The Bounty Hunter | 1x15 / 15 of 51 | 2404 | January 19, 1969 |
| On a Clear Night You Can See Earth | 1x16 / 16 of 51 | 2413 | January 26, 1969 |
| Deadly Lodestone | 1x17 / 17 of 51 | 2419 | February 2, 1969 |
| Night of Thrombeldinbar | 1x18 / 18 of 51 | 2420 | February 16, 1969 |
| Seven Little Indians | 1x19 / 19 of 51 | 2421 | February 23, 1969 |
| Target: Earth | 1x20 / 20 of 51 | 2422 | March 2, 1969 |
| Genius at Work | 1x21 / 21 of 51 | 2418 | March 9, 1969 |
| Return of Inidu | 1x22 / 22 of 51 | 2424 | March 16, 1969 |
| Rescue | 1x23 / 23 of 51 | 2423 | March 23, 1969 |
| Sabotage | 1x24 / 24 of 51 | 2417 | March 30, 1969 |
| Shell Game | 1x25 / 25 of 51 | 2425 | April 13, 1969 |
| The Chase | 1x26 / 26 of 51 | 2426 | April 20, 1969 |