Lost Missions of the Space Age: 1968 | ||||
| X-15A S-13 | X-13A 1 F-79 | 21 Aug 1968 | Flown | 13th X-15A manned suborbital |
| Dyna-Soar T2C O-8 | Dyna-Soar 22 | 1 Jan 1968 | Canceled | 9th Dyna Soar Titan II Centaur manned orbital |
| Dyna-Soar T2C O-3 | Dyna-Soar 20 | 1 Feb 1968 | Canceled | 3rd Dyna Soar Titan II Centaur manned orbital |
| Dyna-Soar T3C O-X-2 | Dyna-Soar 10 | 1 Feb 1968 | Canceled | 2nd Dyna Soar Titan IIIC manned high extended orbital |
| Dyna-Soar T3C O-X-4 | Dyna-Soar 10 | 1 Feb 1968 | Canceled | 4th Dyna Soar Titan IIIC manned high extended orbital |
| Dyna-Soar T3C O-X-6 | Dyna-Soar 10 | 1 Feb 1968 | Canceled | 6th Dyna Soar Titan IIIC manned high extended orbital |
| Gemini T3C M O-LAB(U)-1 | MOL 1 | 1 Feb 1968 | Canceled | 1st Gemini Titan IIIC unmanned 30-day low inclination orbital |
| Gemini T2 A O-LAND-1 | Gemini 19 | 1 Feb 1968 | Study | 1st Gemini Titan II applications program manned land recovery orbital |
| Gemini T2 A O-TEL-1 | Gemini 20 | 1 Feb 1968 | Study | 1st Gemini Titan II applications program manned astronomical telescope orbital |
| Gemini S1B A T-MORL(U)-1 | MORL | 1 Mar 1968 | Study | 1st Gemini Saturn IB unmanned Manned Orbital Research Laboratory |
| Gemini T2 A D-MORL-1 | Gemini MF-1 | 5 Mar 1968 | Study | 1st Gemini Titan II manned Ferry Vehicle docking to MORL |
| Dyna-Soar T2C O-4 | Dyna-Soar 21 | 1 Apr 1968 | Canceled | 4th Dyna Soar Titan II Centaur manned orbital |
| Dyna-Soar T2C O-9 | Dyna-Soar 23 | 1 Apr 1968 | Canceled | 9th Dyna Soar Titan II Centaur manned orbital |
| Gemini T3C M O-LAB-1 | MOL 2 | 1 Apr 1968 | Canceled | 1st Gemini Titan IIIC manned 30-day low inclination orbital |
| Dyna-Soar T2C O-5 | Dyna-Soar 22 | 1 Jun 1968 | Canceled | 5th Dyna Soar Titan II Centaur manned orbital |
| Gemini T2 A D-MORL-2 | Gemini MF-2 | 1 Jun 1968 | Study | 2nd Gemini Titan II manned Ferry Vehicle docking to MORL |
| Gemini T3C M O-LAB-2 | MOL 3 | 1 Jul 1968 | Canceled | 2nd Gemini Titan IIIC manned 30-day low inclination orbital |
| Dyna-Soar T2C O-6 | Dyna-Soar 23 | 1 Aug 1968 | Canceled | 6th Dyna Soar Titan II Centaur manned orbital |
| Gemini S1B A D-MORL-1 | Gemini MF-3 | 1 Sep 1968 | Study | 1st Gemini Saturn IB manned Ferry/Supply Vehicle docking to MORL |
| Gemini T3C M O-LAB-3 | MOL 4 | 1 Oct 1968 | Canceled | 3rd Gemini Titan IIIC manned 30-day low inclination orbital |
| Gemini T2 A D-MORL-3 | Gemini MF-4 | 1 Dec 1968 | Study | 3rd Gemini Titan II manned Ferry Vehicle docking to MORL |