| BASEL | ⊕ 1968 | ⊕ Grammar and Syntax-oriented | ⊕ United States | BASE Language for an extensible language facility | |
| B-LINE | ⊕ 1968 | ⊕ 2d shape | ⊕ United States | ||
| Cameron chemical language | ⊕ 1968 | ⊕ Chemical formula languages | ⊕ United Kingdom | Chemical engineering language | |
| CARDIAC | ⊕ 1968 | ⊕ Symbolic assemblers | ⊕ United States | ||
| COPI | ⊕ 1968 | ⊕ CAI languages | ⊕ Germany | Computer Oriented Programmed Instruction | |
| Coursewriter III | ⊕ 1968 | ⊕ CAI languages | ⊕ United States | ||
| English | ⊕ 1968 | ⊕ Other US historic | ⊕ United States | English as a programming language | |
| ESPOL | ⊕ 1968 | ⊕ Other Algol 60s | ⊕ United States | Executive System Problem Oriented Language | |
| Euphemie | ⊕ 1968 | ⊕ Reactive | ⊕ France | Hybrid graphical structural programming language | |
| FOIL | ⊕ 1968 | ⊕ CAI languages | ⊕ United States | ||
| GRASS | ⊕ 1968 | ⊕ 2d shape | ⊕ United States | ||
| Lagrol | ⊕ 1968 | ⊕ 2d shape | ⊕ France | Graphics language | |
| MINIAPT | ⊕ 1968 | ⊕ Numerical Control | ⊕ Germany | Minicomputer APT | |
| NELAPT | ⊕ 1968 | ⊕ Numerical Control | ⊕ United Kingdom | CNC language | |
| OLDAS | ⊕ 1968 | ⊕ Expression oriented | ⊕ United States | ||
| OSL | ⊕ 1968 | ⊕ Other algorithmic | ⊕ United States | Operating System Language | |
| PA2 | ⊕ 1968 | ⊕ Statistical | ⊕ United States | Problem Analysis Language | |
| PAL | ⊕ 1968 | ⊕ Other lambda | ⊕ United States | Pedagogic Algorithmic Language | |
| PI | ⊕ 1968 | ⊕ Macros | ⊕ United States | Princeton Interactive compiler-compiler | |
| PILOT | ⊕ 1968 | ⊕ CAI languages | ⊕ United States | Computer aided instruction language | |
| PLAGO | ⊕ 1968 | ⊕ Other PL/Is | ⊕ United States | ||
| PROTRAN | ⊕ 1968 | ⊕ External systems control | ⊕ United Kingdom | Process control language | |
| SAIL | ⊕ 1968 | ⊕ Map/Dictionary | ⊕ United States | Stanford Artificial Intelligence Language | |
| SAL | ⊕ 1968 | ⊕ Algebraic | ⊕ United Kingdom | Simple Algebraic Language | |
| Suntran | ⊕ 1968 | ⊕ Decision tables | ⊕ United States | Sun Fortran Decision table language | |
| TUSTEP | ⊕ 1968 | ⊕ Editing and processing | ⊕ Germany |