| 1401 structured language | ⊕ 1966 | ↓ ↑ ⊕ Multi-purpose | ⊕ Other US historic | ⊕ United States | Pedogogical language for IBM 1401 |
| ABLE | ⊕ 1966 | ⊕ Generation of JOSS II | ⊕ United States | ICC JOSS II for the IBM 360 | |
| ADPP | ⊕ 1966 | ↓ ↑ ⊕ Business Data Processing | ⊕ Other DPLs | ⊕ United States | Navy data processing language |
| AEDNET | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ Graph | ⊕ United States | AED dialect for modelling networks |
| ALGEM | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ Algebraic | ⊕ United States | Polynomials-capable list-processing |
| ALGOL C | ⊕ 1966 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United States | ALGOL 60 with extensions to permit user defined extensions |
| ALMS | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ Algebraic | ⊕ United States | Interactive algebraic system |
| ALPAKB | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ Algebraic | ⊕ United States | Generalised version of ALPAK |
| AMTRAN | ⊕ 1966 | ↓ ↑ ⊕ On-Line | ⊕ Arithmetic | ⊕ United States | Automatic Mathematical Translator |
| APL | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ Set | ⊕ United States | Set-based list-processing language |
| AUTOMAST | ⊕ 1966 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Algebraic | ⊕ United States | automatic mathematical analysis and symbolic translation |
| BHSL | ⊕ 1966 | ⊕ Analog | ⊕ United States | Basic HYTRAN Simulation Language | |
| Burroughs Assembler | ⊕ 1966 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Symbolic assemblers | ⊕ United States | |
| C-10 | ⊕ 1966 | ↓ ↑ ⊕ Business Data Processing | ⊕ Flat DB | ⊕ United States | Improved version of COLINGO |
| CAM | ⊕ 1966 | ⊕ Gestalt programming | ⊕ United States | Project-based AED | |
| CATO | ⊕ 1966 | ⊕ CAI languages | ⊕ United States | ||
| CCL | ⊕ 1966 | ↓ ↑ ⊕ Business Data Processing | ⊕ Ad hoc query languages | ⊕ United States | Querying language |
| Chingari conversational APT | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ Numerical Control | ⊕ United States | Conversational APT |
| COMPUTEST II-D | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ CAI languages | ⊕ United States | CAI and interviewing language |
| Conversational FORTRAN V | ⊕ 1966 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Non Standard FIV | ⊕ United States | |
| CONVERT | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ List | ⊕ United States | String processing language hybrid of COMIT and LISP |
| CourseWriter | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ CAI languages | ⊕ United States | CAI Language |
| Cramer and Strauss hybrid oriented language | ⊕ 1966 | ⊕ External systems control | ⊕ United States | ||
| CUCH | ⊕ 1966 | ⊕ Lazy Evaluation FPs | ⊕ United States | ||
| DAC-I | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ United States | GM Design system |
| DATAN | ⊕ 1966 | ⊕ Optimisation and LP | ⊕ United States | ||
| Desktop Calculator Formac | ⊕ 1966 | ⊕ Formulaic | ⊕ United States | ||
| Detab-66 | ⊕ 1966 | ↓ ↑ ⊕ Business Data Processing | ⊕ Decision tables | ⊕ United States | |
| DIALOG | ⊕ 1966 | ↓ ↑ ⊕ On-Line | ⊕ Generation of JOSS I | ⊕ United States | Interactive math using graphics tablet |
| DIAN | ⊕ 1966 | ⊕ 2d shape | ⊕ United States | Simulation language | |
| DIMATE | ⊕ 1966 | ⊕ External systems testing | ⊕ United States | ||
| DL/I | ⊕ 1966 | ↓ ↑ ⊕ Business Data Processing | ⊕ Flat DB | ⊕ United States | Data Language/I |
| DLI | ⊕ 1966 | ⊕ 3d shape | ⊕ United States | 3d CAD system | |
| DMALGOL | ⊕ 1966 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United States | ALGOL with data extensions |
| DOD Cobol | ⊕ 1966 | ↓ ↑ ⊕ Business Data Processing | ⊕ COBOL-61 | ⊕ United States | UNIVAC version of DoD mandated COBOL |
| EASL | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ Expression oriented | ⊕ United States | continuous simulation language |
| EPL | ⊕ 1966 | ↓ ↑ ⊕ Multi-purpose | ⊕ IBM PL/Is | ⊕ United States | Early PL/1 |
| ESI | ⊕ 1966 | ↓ ↑ ⊕ On-Line | ⊕ Generation of JOSS I | ⊕ United States | Engineering and Scientific Interpreter |
| FAMOUS | ⊕ 1966 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Algebraic | ⊕ United States | Algebraic system |
| FLIP | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ List | ⊕ United States | Format List Processor |
| FMPS | ⊕ 1966 | ⊕ Non Standard FIV | ⊕ United States | ||
| FORTRAN 66 | ⊕ 1966 | ↓ ↑ ⊕ Numerical Scientific | ⊕ FORTRAN 66 standard | ⊕ United States | |
| FORTRAN V | ⊕ 1966 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Non Standard FIV | ⊕ United States | Univac super-Fortran for the 1108 |
| FSL | ⊕ 1966 | ⊕ Grammar and Syntax-oriented | ⊕ United States | ||
| GAMMA | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ Decision tables | ⊕ United States | Bonner and Moore Matrix Generator language |
| GAMMA 3 | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ Decision tables | ⊕ United States | Matrix Generator and report writer |
| GDC MIDAS | ⊕ 1966 | ⊕ Expression oriented | ⊕ United States | ||
| GERT | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ United States | Graphical simulation system |
| GIM-I | ⊕ 1966 | ↓ ↑ ⊕ Business Data Processing | ⊕ Ad hoc query languages | ⊕ United States | Information retrieval language |
| GIS | ⊕ 1966 | ↓ ↑ ⊕ Business Data Processing | ⊕ Flat DB | ⊕ United States | General Information Store |
| Glypnir | ⊕ 1966 | ↓ ↑ ⊕ Multi-purpose | ⊕ Other Algol 60s | ⊕ United States | Parallel ALGOL |
| GRASP | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ United States | GRAphic Service Program |
| GSS | ⊕ 1966 | ↓ ↑ ⊕ On-Line | ⊕ Multiline | ⊕ United States | Lincoln Lab Graphical Systems Services |
| HEPL PL/I | ⊕ 1966 | ⊕ Other PL/Is | ⊕ United States | ||
| IBMAP | ⊕ 1966 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Macroassemblers | ⊕ United States | Bell Labs macro assembler |
| ISIS | ⊕ 1966 | ↓ ↑ ⊕ On-Line | ⊕ Generation of JOSS I | ⊕ United States | JOSS II dialect |
| ISM | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ Algebraic | ⊕ United States | Symbol manipulation language |
| IVTRAN | ⊕ 1966 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Non Standard FIV | ⊕ United States | Parallel FORTRAN |
| JFLIP | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ Non Standard FIV | ⊕ United States | FORTRAN Language with Interval Preprocessor |
| LEANS | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ Differential Equations | ⊕ United States | Lehigh Pactolus |
| LECOM | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ List | ⊕ United States | LeHigh COMIT |
| LUCIFER | ⊕ 1966 | ↓ ↑ ⊕ On-Line | ⊕ Experiment control and recording | ⊕ United States | Text manipulation system for experimental results |
| LYRIC | ⊕ 1966 | ⊕ CAI languages | ⊕ United States | ||
| MACLISP | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ⊕ United States | |
| MADCAP IV | ⊕ 1966 | ↓ ↑ ⊕ On-Line | ⊕ Multiline | ⊕ United States | 2d maths-oriented system |
| MANAGE | ⊕ 1966 | ↓ ↑ ⊕ Business Data Processing | ⊕ Ad hoc query languages | ⊕ United States | |
| MANIP | ⊕ 1966 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Algebraic | ⊕ United States | A set of FORTRAN programs to manipulate expressions. |
| MAP | ⊕ 1966 | ↓ ↑ ⊕ On-Line | ⊕ Generation of JOSS I | ⊕ United States | Mathematical Analysis Program. |
| MARK III | ⊕ 1966 | ⊕ Ad hoc query languages | ⊕ United States | ||
| Markstran | ⊕ 1966 | ⊕ United States | Paper language for the table driven compiler project | ||
| META 5 | ⊕ 1966 | ⊕ Grammar and Syntax-oriented | ⊕ United States | ||
| MUSICOMP | ⊕ 1966 | ⊕ Sound-Synthesis | ⊕ United States | ||
| MUSIGOL | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ Sound-Synthesis | ⊕ United States | Musical composition language |
| OCAL | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ Patterns | ⊕ United States | Pattern matching alnguage for cryptographic analysis |
| OLC | ⊕ 1966 | ↓ ↑ ⊕ On-Line | ⊕ Arithmetic | ⊕ United States | UCSB students |
| PIFOR | ⊕ 1966 | ⊕ Non Standard FIV | ⊕ United States | ||
| PL/ACME | ⊕ 1966 | ↓ ↑ ⊕ Multi-purpose | ⊕ Other PL/Is | ⊕ United States | PL/I dialect for medical applications |
| PLASMA | ⊕ 1966 | ⊕ United States | |||
| PM | ⊕ 1966 | ⊕ Algebraic | ⊕ United States | Polynomial Manipulations | |
| PRO | ⊕ 1966 | ⊕ Lines | ⊕ United States | ||
| PROSPRO | ⊕ 1966 | ⊕ United States | IBM process control language | ||
| PSYCO | ⊕ 1966 | ⊕ Grammar and Syntax-oriented | ⊕ United States | Princeton SYntax COmpiler | |
| REFCO III | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ List | ⊕ United States | Reference counting list processing system |
| REPL | ⊕ 1966 | ⊕ Multics PL/Is | ⊕ United States | Restricted EPL | |
| SAAL | ⊕ 1966 | ⊕ Symbolic assemblers | ⊕ United States | Univac assembler | |
| SCOOP | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ United States | Graphics system for CalComp |
| SDS Fortran | ⊕ 1966 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Non Standard FIV | ⊕ United States | |
| SERIES | ⊕ 1966 | ⊕ Flat DB | ⊕ United States | ||
| SIMSCRIPT II | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ United States | Simulations language |
| Sketchpad III | ⊕ 1966 | ⊕ 3d shape | ⊕ United States | 3d constraint-based drawing language | |
| SPLINTER | ⊕ 1966 | ↓ ↑ ⊕ Multi-purpose | ⊕ Other PL/Is | ⊕ United States | Scientific PL/I Interpreter |
| System/360 Macro-Assembler | ⊕ 1966 | ⊕ Macroassemblers | ⊕ United States | Macroassembler for the S/360 | |
| TAB II | ⊕ 1966 | ⊕ Flat DB | ⊕ United States | ||
| TAB40 | ⊕ 1966 | ↓ ↑ ⊕ Business Data Processing | ⊕ Decision tables | ⊕ United States | Decision table language |
| TELCOMP | ⊕ 1966 | ↓ ↑ ⊕ On-Line | ⊕ Generation of JOSS II | ⊕ United States | Joss variant for remote computing |
| TELSIM | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ Expression oriented | ⊕ United States | Simulation language |
| TEXTPAC | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ Substrings | ⊕ United States | Text handling language |
| TRANQUIL | ⊕ 1966 | ⊕ Set | ⊕ United States | Set language for ALGOL | |
| TRIGMAN | ⊕ 1966 | ⊕ Algebraic | ⊕ United States | celestial mathematics system | |
| UAIDE | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ United States | Graphics system at NASA |
| UMIST | ⊕ 1966 | ↓ ↑ ⊕ String and List Processing | ⊕ Macros | ⊕ United States | Michigan TRAC |
| UNIVAC 1108 APT III | ⊕ 1966 | ⊕ Numerical Control | ⊕ United States | ||
| UNIVAC 1108 SORT/MERGE | ⊕ 1966 | ⊕ Sorting and editing systems | ⊕ United States | ||
| UNIVAC GPSS | ⊕ 1966 | ⊕ Event scheduling | ⊕ United States | ||
| UP.L6 | ⊕ 1966 | ⊕ List | ⊕ United States | ||
| UTOL | ⊕ 1966 | ⊕ Intermediate languages and VMs | ⊕ United States | ||
| VICAR | ⊕ 1966 | ↓ ↑ ⊕ Specialised Languages | ⊕ AV-Control | ⊕ United States | NASA image manipulation language |
| Wisconsin Algol | ⊕ 1966 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United States |