| ACL | 1971 | ↓ ↑ ⊕ Multi-purpose | ⊕ Early Autocodes | ⊕ United Kingdom | Systems language for ICL Atlas |
| Actors | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Actor | ⊕ United States | Agent based object parallel language |
| AEPL | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Markovs | ⊕ Israel | An Extensible Programming Language |
| AGGIE | 1971 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Fortran I-III Variants | ⊕ United States | FORTRAN II from TAMU |
| ALADIN | 1971 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Arithmetic | ⊕ France | Interactive maths system for IBM 360. |
| ALC | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Assemblers | ⊕ United States | IBM 360 assembly language |
| ALLEGRO | 1971 | ⊕ United States | |||
| ALPHA | 1971 | ↓ ↑ ⊕ Business Data Processing | ⊕ United States | Data-query language based on relational calculus | |
| AMBUSH | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Linear programming programming language | |
| ANALITIK | 1971 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Other Russian/Soviet | ⊕ Russian Federation | Algorithmic language |
| APS | 1971 | ⊕ Symbolic assemblers | ⊕ France | Assembly Programming System | |
| ASA | 1971 | ||||
| ASCENT | 1971 | ||||
| ASM | 1971 | ||||
| ASP | 1971 | ⊕ United States | Artificial Scientific Programming | ||
| ASPER | 1971 | ||||
| ASSIST | 1971 | ||||
| AUTOPOL | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Numerical Control | ⊕ United States | AUTOmated Programming Of Lathes |
| BA | 1971 | ||||
| BAL | 1971 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Assemblers | ⊕ United States | IBM 360 assembly language |
| BALM4 | 1971 | ⊕ United States | |||
| Barron Conversational Fortran | 1971 | ⊕ United Kingdom | |||
| Basic Systems Language | 1971 | ↓ ↑ ⊕ Multi-purpose | ⊕ United States | Forerunner of PL/S | |
| BASIC/RT | 1971 | ⊕ United States | |||
| BELL-CODE | 1971 | ||||
| BELSIM | 1971 | ||||
| BULLCAT | 1971 | BULL Calcul Automatique des Temps | |||
| CASDAL | 1971 | ⊕ United States | High-level data language for the database machine CASSM | ||
| CDCWIC | 1971 | ||||
| CDM | 1971 | ⊕ Arithmetic | Control Data Mathematical programming | ||
| CEMMA 2 | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Poland | a simulation language | |
| CESSL | 1971 | ||||
| CIMPL | 1971 | ↓ ↑ ⊕ On-Line | ⊕ Other PL/Is | ⊕ United States | |
| CINEX-2 | 1971 | ⊕ Japan | |||
| CLAM | 1971 | ↓ ↑ ⊕ Non-numerical Scientific | ⊕ United Kingdom | ||
| CLASP | 1971 | ↓ ↑ ⊕ Multi-purpose | ⊕ United States | Computer Language for AeronauticS and Programming - SPL subset | |
| COMIC | 1971 | ||||
| COMPUTE | 1971 | ⊕ Arithmetic | ⊕ United States | Interactive calulator for 7094 | |
| COPAN | 1971 | ||||
| DAP | 1971 | ||||
| DAPHNE | 1971 | ||||
| Data Retrieval Language | 1971 | ⊕ Ad hoc query languages | |||
| Dectab | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Decision tables | ⊕ United States | Courant Institute decision table language |
| Deftab | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Decision tables | ⊕ United States | Courant Institute decision table language |
| DEL | 1971 | ↓ ↑ ⊕ Experimental and other | ⊕ Intermediate languages and VMs | ⊕ United States | Variable instruction set abstract interpreter |
| DELPHI-SPEAKEASY | 1971 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Matrix | ⊕ United States | Speakeasy ported to the DELPHI |
| Donaghey and Ozkul Statistics Language | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Statistical | ⊕ United States | |
| DYL260 | 1971 | ↓ ↑ ⊕ Business Data Processing | ⊕ United States | Auditing language | |
| DYNAMAT | 1971 | ||||
| EAI ASSEMBLY | 1971 | ||||
| EASYTRAN | 1971 | ||||
| ECT | 1971 | ||||
| EDITOR | 1971 | ||||
| EIN | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | ||
| ELAN | 1971 | ||||
| ELATE | 1971 | ⊕ United States | Hughes Aircraft | ||
| ELP | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ External systems testing | ⊕ United States | English language avionics testing |
| ENLODE | 1971 | ||||
| EPOS ALGOL | 1971 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL68s | ||
| EPSYLON | 1971 | ||||
| ERL | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Response languages | ⊕ United States | Evoked Response Language |
| ESP | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Forecasting | ⊕ United States | Econometric Software Package |
| ETC | 1971 | ⊕ United States | |||
| EVA-LISP | 1971 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ||
| Extensible LSD | 1971 | ⊕ United States | |||
| FAS | 1971 | ||||
| FASBOL | 1971 | ↓ ↑ ⊕ String and List Processing | ⊕ Patterns | ⊕ United States | Snobol compiler |
| FASP | 1971 | ||||
| Flocoder | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2-D Graphic Languages | ⊕ United Kingdom | Flowchart-based languages |
| FOCAL-71 | 1971 | ↓ ↑ ⊕ On-Line | ⊕ Generation of JOSS I | ⊕ United States | 1971 version of FOCAL |
| FORCOM | 1971 | ||||
| FORMAL | 1971 | ↓ ↑ ⊕ Non-numerical Scientific | ⊕ United States | ||
| FREIBURGER CODE | 1971 | ||||
| GAMMATRAN | 1971 | ⊕ United States | |||
| GEFRC | 1971 | ||||
| Genotype | 1971 | ⊕ Russian Federation | Linustics-centred array processing language | ||
| GENTRAN | 1971 | ⊕ FORTRAN IV standard | ⊕ United Kingdom | Dialect of FORTRAN for the GENESYS system | |
| GLOSS | 1971 | ||||
| GPL/I | 1971 | ⊕ Japan | |||
| GPL/I | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ United States | |
| GPMS | 1971 | ⊕ Japan | |||
| GPSS 1100 | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Process interaction | ⊕ United States | GPSS for the UNIVAC 1100 |
| Graphics Language | 1971 | ⊕ Japan | |||
| GRIP | 1971 | ⊕ United States | |||
| GRIP-71 | 1971 | ↓ ↑ ⊕ On-Line | ⊕ United States | ||
| Hatfield Basic | 1971 | ⊕ Dartmouth Basics | ⊕ United Kingdom | Teaching Basics | |
| Hocus Pocus | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Process interaction | ⊕ United Kingdom | Algol based simulation language |
| IBFAP | 1971 | ||||
| IBSFAP | 1971 | ||||
| ICPL | 1971 | ⊕ United States | |||
| Interactive STRUDL | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Civil | ⊕ United States | Strudl for Timeshare systems plus graphics |
| INTERP | 1971 | ↓ ↑ ⊕ On-Line | ⊕ Generation of JOSS I | ⊕ United States | Burroughs conversational system |
| INZENYER | 1971 | ||||
| Irvine computer art language | 1971 | ⊕ 2d shape | |||
| ISP | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Digital | ⊕ United States | |
| ISPL | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Digital | ⊕ United States | Instruction Set Processor Language |
| ISPL | 1971 | ↓ ↑ ⊕ Experimental and other | ⊕ United States | Incremental System Programming Language | |
| ISRCOMP | 1971 | ||||
| JCL | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Command systems | ⊕ United States | Job Control Language |
| JOVIAL J3B | 1971 | ⊕ United States | |||
| KFAPF | 1971 | ⊕ Japan | |||
| L-10 | 1971 | ⊕ United States | |||
| LADD | 1971 | ⊕ Japan | |||
| LAFFF | 1971 | ⊕ United States | Financial anaysis language | ||
| LAMBDA | 1971 | ⊕ United States | |||
| LOUP | 1971 | ||||
| LSC | 1971 | ||||
| LSD | 1971 | ↓ ↑ ⊕ Multi-purpose | ⊕ United States | Language for Systems Development | |
| LSYD | 1971 | ||||
| MA/8 | 1971 | ||||
| Macro SPITBOL | 1971 | ⊕ Patterns | ⊕ United States | ||
| MAL | 1971 | ||||
| MAL | 1971 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Algebraic | ⊕ United States | Boeing Matrix algebra language |
| Manna and Waldinger 1971 | 1971 | ||||
| MDL | 1971 | ⊕ Strict evaluation LISPs | ⊕ United States | LISP with data types and arrays | |
| Medela | 1971 | ⊕ Netherlands | |||
| META/PLUS | 1971 | ⊕ United States | |||
| MICMAC | 1971 | ||||
| Micro | 1971 | ⊕ Microprogramming and HLAs | ⊕ United States | Macro-assembler for microprogrammed processors | |
| MIRAGER | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Assemblers | ⊕ United States | Micropgrogramming assembler |
| MITRA | 1971 | ||||
| MOHAC | 1971 | ||||
| MOL-360 | 1971 | ⊕ United States | |||
| MONITOR | 1971 | ||||
| MOST | 1971 | ⊕ Macros | Macro-Oriented System Technique | ||
| MP/1 | 1971 | ⊕ Canada | |||
| MPL | 1971 | ↓ ↑ ⊕ Experimental and other | ⊕ Microprogramming and HLAs | ⊕ United States | MicroProgramming Language |
| Muddle | 1971 | ↓ ↑ ⊕ String and List Processing | ⊕ Strict evaluation LISPs | ⊕ United States | LISP with data types and array |
| MUSIC 10 | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Sound-Synthesis | ⊕ United States | Musical composition language |
| NARP | 1971 | ||||
| NB | 1971 | ↓ ↑ ⊕ Multi-purpose | ⊕ CPL Algols | ⊕ United States | Early version of C |
| NEATA | 1971 | ⊕ United Kingdom | |||
| NEC | 1971 | ||||
| NERC | 1971 | ||||
| NROFF | 1971 | ↓ ↑ ⊕ String and List Processing | ⊕ United States | New ROFF | |
| OCODE | 1971 | ⊕ United Kingdom | |||
| OSA | 1971 | ||||
| OSAP | 1971 | ||||
| OSAS-A | 1971 | ||||
| OSUSYS | 1971 | ||||
| OULP | 1971 | ||||
| PADSOL | 1971 | ||||
| PANEL | 1971 | ||||
| PASO 11 | 1971 | ||||
| PATCH | 1971 | ||||
| PDQ | 1971 | ||||
| PEESPOL | 1971 | ↓ ↑ ⊕ Experimental and other | ⊕ Microprogramming and HLAs | ⊕ United States | UoI microprogramming system |
| PGS | 1971 | Program Generator System | |||
| Phrase Strcture FORTRAN | 1971 | ||||
| PHYSICTRAN | 1971 | ⊕ Non Standard FIV | ⊕ France | FORTRAN with units etc | |
| PICASSO | 1971 | ⊕ 2d shape | ⊕ United States | LBL Interactive graphics language | |
| PIG 2 | 1971 | ||||
| PIRL | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Graph | ⊕ United States | |
| PIVOT | 1971 | ⊕ United States | Program verification | ||
| PL-11 | 1971 | ↓ ↑ ⊕ Multi-purpose | ⊕ PL-360s | ⊕ Switzerland | CERN PDP-11 systems language |
| PLOTAN | 1971 | ⊕ Printer control languages | ⊕ United States | Generalised plotting routine for the 7904 | |
| POPLER | 1971 | ↓ ↑ ⊕ String and List Processing | ⊕ United Kingdom | Hybrid of PLANNER and POP-2 | |
| PPG | 1971 | ||||
| PRETAB | 1971 | ||||
| Prolog | 1971 | ↓ ↑ ⊕ String and List Processing | ⊕ Horn clause | ⊕ France | Logic programming language |
| PROSA | 1971 | ||||
| PS/8 FOCAL | 1971 | ↓ ↑ ⊕ On-Line | ⊕ Generation of JOSS I | ⊕ United States | |
| P-STAT | 1971 | ⊕ Statistical | ⊕ United States | Princeton stats package | |
| PSU-ICES | 1971 | ⊕ United States | |||
| RASS | 1971 | ⊕ United States | Agricultural statistics package | ||
| RCA-STAT | 1971 | ⊕ Statistical | ⊕ United States | RCA stats package | |
| REGENT | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ Germany | CAD Language |
| ROFF | 1971 | ↓ ↑ ⊕ String and List Processing | ⊕ Layout and display | ⊕ United States | UNIX RUNOFF |
| RTL | 1971 | ⊕ United Kingdom | |||
| RTL/1 | 1971 | ⊕ United Kingdom | Implementation ofRTL/I | ||
| RUG | 1971 | ↓ ↑ ⊕ Business Data Processing | ⊕ Report Generators | Report and Update Program Generator | |
| S2 | 1971 | ||||
| SAS | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Statistical | ⊕ United States | Statistical Analysis System |
| SCALPEL | 1971 | ||||
| SCEPTRE | 1971 | ↓ ↑ ⊕ String and List Processing | ⊕ Expression oriented | ⊕ United States | Circuit analysis system |
| Scratchpad | 1971 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Symbolic | ⊕ United States | General purpose interactive symbolic maths system |
| SCRATCHPAD/1 | 1971 | ⊕ Symbolic | ⊕ United States | ||
| SEL | 1971 | ⊕ Italy | |||
| SEQAS | 1971 | ⊕ Germany | Medical programming language | ||
| sh | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Command systems | ⊕ United States | Command language for UNIX |
| SIMBOL | 1971 | ⊕ Symbolic | ⊕ United Kingdom | ICL SIMulated Boolean Oriented Language | |
| SIMPL | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Interactive simulation language | |
| SIMPLE | 1971 | ↓ ↑ ⊕ Multi-purpose | ⊕ Other PL/Is | ⊕ United States | |
| SIMPS | 1971 | ⊕ Japan | |||
| SIMSOL | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | CDC simulation language | |
| SIMULATE | 1971 | ||||
| SIP | 1971 | ||||
| SIRIUS | 1971 | ⊕ United States | |||
| SLI | 1971 | ||||
| Smalltalk | 1971 | ⊕ Simple | ⊕ United States | ||
| SMIL | 1971 | ||||
| SNOWBALL | 1971 | ⊕ Patterns | |||
| SOCRATES | 1971 | ||||
| SOP | 1971 | ||||
| Speakeasy | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Algebraic | ⊕ United States | Interactive expression-oriented language with plugins |
| SPITBOL | 1971 | ⊕ United States | |||
| SPL | 1971 | ↓ ↑ ⊕ Multi-purpose | ⊕ Other PL/Is | ⊕ Canada | Systems Programming Language |
| SPL | 1971 | ↓ ↑ ⊕ Multi-purpose | ⊕ Germany | Simple Programming Language | |
| Stanford Pascal | 1971 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ United States | Pascal at Stanford on CDC |
| STATJOB | 1971 | ↓ ↑ ⊕ String and List Processing | ⊕ Statistical | ⊕ United States | |
| STAT-PACK | 1971 | ⊕ Statistical | ⊕ Canada | ||
| STRCOMP | 1971 | ||||
| Student PL/I | 1971 | ⊕ Other PL/Is | ⊕ Australia | ||
| Sue | 1971 | ⊕ Canada | |||
| SURVO | 1971 | ||||
| SUSA | 1971 | ||||
| SWIFT | 1971 | ||||
| SYMBOL | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Category theory | ⊕ United States | Hardware based data structure programming language |
| SYMOB | 1971 | SYsteme MOdulaire Bull | |||
| SYMSCRIPT | 1971 | ||||
| System/A | 1971 | ⊕ United States | |||
| TAMP | 1971 | ||||
| TAP | 1971 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ United States | Macroassembler for the TREET system | |
| TAS | 1971 | Telefunken-Assembler-Sprache | |||
| TEXAS | 1971 | ||||
| TEXT EDITOR | 1971 | ||||
| TL/I | 1971 | ||||
| TROL | 1971 | ||||
| TWO-D | 1971 | ⊕ Flowcharts | ⊕ United States | Flow-chart driven compiler | |
| UHFM | 1971 | ↓ ↑ ⊕ Specialised Languages | ⊕ Algebraic | ⊕ United States | Formula manipulation language |
| UMAP | 1971 | ||||
| UNCL | 1971 | ↓ ↑ ⊕ On-Line | ⊕ Generation of JOSS II | ⊕ United States | Language for the TEACH system |
| VELOCODE | 1971 | ||||
| VFAP | 1971 | ||||
| W-20 | 1971 | ||||
| WIPL | 1971 | ||||
| WITRAN | 1971 | ||||
| XS-3 | 1971 | ||||
| Z-A | 1971 | ||||
| Z-ASSEMBLER | 1971 | ⊕ Symbolic assemblers | ⊕ United States | ||
| Zoom | 1971 |