| ACL | 1971 | ↓⊕Early Autocodes | ↓⊕United Kingdom | Systems language for ICL Atlas |
| Actors | 1971 | ↓⊕Actor | ↓⊕United States | Agent based object parallel language |
| AEPL | 1971 | ↓⊕Markovs | ↓⊕Israel | An Extensible Programming Language |
| AGGIE | 1971 | ↓⊕Fortran I-III Variants | ↓⊕United States | FORTRAN II from TAMU |
| ALADIN | 1971 | ↓⊕Arithmetic | ↓⊕France | Interactive maths system for IBM 360. |
| ALC | 1971 | ↓⊕Assemblers | ↓⊕United States | IBM 360 assembly language |
| ALLEGRO | 1971 | ↓⊕United States | ||
| ALPHA | 1971 | ↓⊕United States | Data-query language based on relational calculus | |
| AMBUSH | 1971 | ↓⊕United States | Linear programming programming language | |
| ANALITIK | 1971 | ↓⊕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 | ↓⊕Numerical Control | ↓⊕United States | AUTOmated Programming Of Lathes |
| BA | 1971 | |||
| BAL | 1971 | ↓⊕Assemblers | ↓⊕United States | IBM 360 assembly language |
| BALM4 | 1971 | ↓⊕United States | ||
| Barron Conversational Fortran | 1971 | ↓⊕United Kingdom | ||
| Basic Systems Language | 1971 | ↓⊕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 | ↓⊕Poland | a simulation language | |
| CESSL | 1971 | |||
| CIMPL | 1971 | ↓⊕Other PL/Is | ↓⊕United States | |
| CINEX-2 | 1971 | ↓⊕Japan | ||
| CLAM | 1971 | ↓⊕United Kingdom | ||
| CLASP | 1971 | ↓⊕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 | ↓⊕Decision tables | ↓⊕United States | Courant Institute decision table language |
| Deftab | 1971 | ↓⊕Decision tables | ↓⊕United States | Courant Institute decision table language |
| DEL | 1971 | ↓⊕Intermediate languages and VMs | ↓⊕United States | Variable instruction set abstract interpreter |
| DELPHI-SPEAKEASY | 1971 | ↓⊕Matrix | ↓⊕United States | Speakeasy ported to the DELPHI |
| Donaghey and Ozkul Statistics Language | 1971 | ↓⊕Statistical | ↓⊕United States | |
| DYL260 | 1971 | ↓⊕United States | Auditing language | |
| DYNAMAT | 1971 | |||
| EAI ASSEMBLY | 1971 | |||
| EASYTRAN | 1971 | |||
| ECT | 1971 | |||
| EDITOR | 1971 | |||
| EIN | 1971 | ↓⊕United States | ||
| ELAN | 1971 | |||
| ELATE | 1971 | ↓⊕United States | Hughes Aircraft | |
| ELP | 1971 | ↓⊕External systems testing | ↓⊕United States | English language avionics testing |
| ENLODE | 1971 | |||
| EPOS ALGOL | 1971 | ↓⊕True ALGOL68s | ||
| EPSYLON | 1971 | |||
| ERL | 1971 | ↓⊕Response languages | ↓⊕United States | Evoked Response Language |
| ESP | 1971 | ↓⊕Forecasting | ↓⊕United States | Econometric Software Package |
| ETC | 1971 | ↓⊕United States | ||
| EVA-LISP | 1971 | ↓⊕Lazy Evaluation LISPs | ||
| Extensible LSD | 1971 | ↓⊕United States | ||
| FAS | 1971 | |||
| FASBOL | 1971 | ↓⊕Patterns | ↓⊕United States | Snobol compiler |
| FASP | 1971 | |||
| Flocoder | 1971 | ↓⊕2-D Graphic Languages | ↓⊕United Kingdom | Flowchart-based languages |
| FOCAL-71 | 1971 | ↓⊕Generation of JOSS I | ↓⊕United States | 1971 version of FOCAL |
| FORCOM | 1971 | |||
| FORMAL | 1971 | ↓⊕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 | ↓⊕2d shape | ↓⊕United States | |
| GPL/I | 1971 | ↓⊕Japan | ||
| GPMS | 1971 | ↓⊕Japan | ||
| GPSS 1100 | 1971 | ↓⊕Process interaction | ↓⊕United States | GPSS for the UNIVAC 1100 |
| Graphics Language | 1971 | ↓⊕Japan | ||
| GRIP | 1971 | ↓⊕United States | ||
| GRIP-71 | 1971 | ↓⊕United States | ||
| Hatfield Basic | 1971 | ↓⊕Dartmouth Basics | ↓⊕United Kingdom | Teaching Basics |
| Hocus Pocus | 1971 | ↓⊕Process interaction | ↓⊕United Kingdom | Algol based simulation language |
| IBFAP | 1971 | |||
| IBSFAP | 1971 | |||
| ICPL | 1971 | ↓⊕United States | ||
| Interactive STRUDL | 1971 | ↓⊕Civil | ↓⊕United States | Strudl for Timeshare systems plus graphics |
| INTERP | 1971 | ↓⊕Generation of JOSS I | ↓⊕United States | Burroughs conversational system |
| INZENYER | 1971 | |||
| Irvine computer art language | 1971 | ↓⊕2d shape | ||
| ISP | 1971 | ↓⊕Digital | ↓⊕United States | |
| ISPL | 1971 | ↓⊕Digital | ↓⊕United States | Instruction Set Processor Language |
| ISPL | 1971 | ↓⊕United States | Incremental System Programming Language | |
| ISRCOMP | 1971 | |||
| JCL | 1971 | ↓⊕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 | ↓⊕United States | Language for Systems Development | |
| LSYD | 1971 | |||
| MA/8 | 1971 | |||
| Macro SPITBOL | 1971 | ↓⊕Patterns | ↓⊕United States | |
| MAL | 1971 | |||
| MAL | 1971 | ↓⊕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 | ↓⊕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 | ↓⊕Microprogramming and HLAs | ↓⊕United States | MicroProgramming Language |
| Muddle | 1971 | ↓⊕Strict evaluation LISPs | ↓⊕United States | LISP with data types and array |
| MUSIC 10 | 1971 | ↓⊕Sound-Synthesis | ↓⊕United States | Musical composition language |
| NARP | 1971 | |||
| NB | 1971 | ↓⊕CPL Algols | ↓⊕United States | Early version of C |
| NEATA | 1971 | ↓⊕United Kingdom | ||
| NEC | 1971 | |||
| NERC | 1971 | |||
| NROFF | 1971 | ↓⊕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 | ↓⊕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 | ↓⊕Graph | ↓⊕United States | |
| PIVOT | 1971 | ↓⊕United States | Program verification | |
| PL-11 | 1971 | ↓⊕PL-360s | ↓⊕Switzerland | CERN PDP-11 systems language |
| PLOTAN | 1971 | ↓⊕Printer control languages | ↓⊕United States | Generalised plotting routine for the 7904 |
| POPLER | 1971 | ↓⊕United Kingdom | Hybrid of PLANNER and POP-2 | |
| PPG | 1971 | |||
| PRETAB | 1971 | |||
| Prolog | 1971 | ↓⊕Horn clause | ↓⊕France | Logic programming language |
| PROSA | 1971 | |||
| PS/8 FOCAL | 1971 | ↓⊕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 | ↓⊕2d shape | ↓⊕Germany | CAD Language |
| ROFF | 1971 | ↓⊕Layout and display | ↓⊕United States | UNIX RUNOFF |
| RTL | 1971 | ↓⊕United Kingdom | ||
| RTL/1 | 1971 | ↓⊕United Kingdom | Implementation ofRTL/I | |
| RUG | 1971 | ↓⊕Report Generators | Report and Update Program Generator | |
| S2 | 1971 | |||
| SAS | 1971 | ↓⊕Statistical | ↓⊕United States | Statistical Analysis System |
| SCALPEL | 1971 | |||
| SCEPTRE | 1971 | ↓⊕Expression oriented | ↓⊕United States | Circuit analysis system |
| Scratchpad | 1971 | ↓⊕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 | ↓⊕Command systems | ↓⊕United States | Command language for UNIX |
| SIMBOL | 1971 | ↓⊕Symbolic | ↓⊕United Kingdom | ICL SIMulated Boolean Oriented Language |
| SIMPL | 1971 | ↓⊕United States | Interactive simulation language | |
| SIMPLE | 1971 | ↓⊕Other PL/Is | ↓⊕United States | |
| SIMPS | 1971 | ↓⊕Japan | ||
| SIMSOL | 1971 | ↓⊕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 | ↓⊕Algebraic | ↓⊕United States | Interactive expression-oriented language with plugins |
| SPITBOL | 1971 | ↓⊕United States | ||
| SPL | 1971 | ↓⊕Germany | Simple Programming Language | |
| SPL | 1971 | ↓⊕Other PL/Is | ↓⊕Canada | Systems Programming Language |
| Stanford Pascal | 1971 | ↓⊕Pascals | ↓⊕United States | Pascal at Stanford on CDC |
| STATJOB | 1971 | ↓⊕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 | ↓⊕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 | ↓⊕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 | ↓⊕Algebraic | ↓⊕United States | Formula manipulation language |
| UMAP | 1971 | |||
| UNCL | 1971 | ↓⊕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 |