| *n | 1973 | ↓⊕United States | ||
| 1.pak | 1973 | ↓⊕Graph | ↓⊕Canada | Goal-directed graph-pattern-matching language |
| ABC ALGOL | 1973 | ↓⊕True ALGOL60s | ↓⊕Netherlands | ALGOL 60 extension for symbolic math |
| ADC | 1973 | |||
| ADPPRS | 1973 | |||
| ALIAS | 1973 | ↓⊕Pascals | ↓⊕Netherlands | Bliss variant |
| AP/1 | 1973 | |||
| APLBAGS | 1973 | ↓⊕2d shape | ↓⊕United States | Graphical extensions to APL |
| APLGOL-2 | 1973 | ↓⊕United States | ||
| ASPOL | 1973 | ↓⊕United States | ||
| ASTAP | 1973 | ↓⊕United States | ||
| AUT-QE | 1973 | ↓⊕Netherlands | ||
| BASCMP | 1973 | ↓⊕United States | ||
| BEDSOCS | 1973 | ↓⊕Process interaction | ↓⊕United Kingdom | |
| BELTEL | 1973 | |||
| BEST400 | 1973 | ↓⊕Report Generators | ↓⊕United States | BESTOP language |
| Birtwhistle GPSSS | 1973 | ↓⊕United Kingdom | ||
| BUILD | 1973 | ↓⊕3d shape | ↓⊕United Kingdom | Solid modelling language |
| CAGES | 1973 | ↓⊕United States | ||
| CAISYS | 1973 | ↓⊕United States | ||
| CAL | 1973 | ↓⊕United States | ||
| CDLM | 1973 | ↓⊕HDLs | ↓⊕United Kingdom | Manchester CDL |
| CELLSIM | 1973 | ↓⊕Systems | ↓⊕United States | Cell population simulation |
| CHEMCSMP | 1973 | ↓⊕Chemical process languages | ↓⊕United States | CSMP dialect with special features for chemistry modelling |
| CHIEF | 1973 | ↓⊕Netherlands | ||
| CLAG | 1973 | ↓⊕Process interaction | ↓⊕Netherlands | Online simulation system |
| CLEOPATRA | 1973 | ↓⊕United States | ||
| CLISP | 1973 | ↓⊕Lazy Evaluation LISPs | ||
| COBRA | 1973 | ↓⊕Macros | ↓⊕United Kingdom | Macro extension system for COBOL |
| COMAL | 1973 | ↓⊕Street basics | ↓⊕Denmark | |
| COMPUTER ANIMATION LANGUAGE | 1973 | ↓⊕Animation | ||
| COMPUTER DESIGN | 1973 | ↓⊕HDLs | ||
| COMSKEE | 1973 | ↓⊕Text analysis | ↓⊕Germany | String analysis language |
| CONNIVER | 1973 | ↓⊕United States | ||
| Criterion COBOL Compiler | 1973 | ↓⊕COBOL-68 | ↓⊕United Kingdom | NCR Cobol |
| DBTG | 1973 | ↓⊕United States | ||
| DECIBLE | 1973 | |||
| DEFT | 1973 | ↓⊕FORTRAN IV standard | ↓⊕Canada | Structured FORTRAN |
| DESPL/l | 1973 | ↓⊕Event scheduling | ↓⊕United States | Discrete event simulation language |
| DETOL | 1973 | ↓⊕External systems testing | Test control language | |
| DG/L | 1973 | ↓⊕Other Algol 60s | ↓⊕United States | Data General Algol 60 |
| DGL | 1973 | |||
| DISSPLA | 1973 | |||
| DMAD | 1973 | ↓⊕United States | ||
| DSDML | 1973 | |||
| EASEy | 1973 | ↓⊕Germany | ||
| EGS3 | 1973 | ↓⊕Monte Carlo | ↓⊕United States | SLAC Monte Carlo system |
| ELFBOL | 1973 | ↓⊕United States | ||
| EXEL | 1973 | ↓⊕France | ||
| FAPS | 1973 | |||
| File Composition | 1973 | |||
| FLUB | 1973 | ↓⊕Symbolic assemblers | ↓⊕United States | Assembler for abstract machine |
| FOL | 1973 | ↓⊕United States | ||
| FORMAC 73 | 1973 | ↓⊕Germany | ||
| FOSIL | 1973 | ↓⊕Command systems | ↓⊕United States | Portable job control language |
| GASP IV | 1973 | ↓⊕Hybrid | ↓⊕United States | General Activity Simulation Program |
| GCL | 1973 | ↓⊕United States | General Control Language | |
| GERTS III QR | 1973 | ↓⊕Event scheduling | ↓⊕United States | Graphical simulation system |
| glue | 1973 | ↓⊕United Kingdom | ||
| GOAL | 1973 | ↓⊕Multiline | ↓⊕United States | Ground Operations Aerospace Language |
| GRAPHIC | 1973 | |||
| grep | 1973 | ↓⊕Patterns | ↓⊕United States | regular expression parser as a command line tool for unix |
| grok | 1973 | |||
| grok | 1973 | ↓⊕Denmark | ||
| GROPE | 1973 | ↓⊕Graph | ↓⊕United States | Graph processing language |
| GSL | 1973 | ↓⊕Event scheduling | Generalized Simulation Language | |
| GSL | 1973 | ↓⊕France | Grenoble System Language | |
| HELP | 1973 | ↓⊕Macros | ↓⊕United States | FLIP in WISP |
| HOLON | 1973 | ↓⊕Belgium | ||
| IFTRAN | 1973 | ↓⊕Non Standard FIV | ↓⊕United States | FORTRAN for structured programming |
| IMP | 1973 | ↓⊕Columnar sheets | ↓⊕United States | OMNITAB variant |
| ISL | 1973 | ↓⊕Event scheduling | ↓⊕United States | Interactive Simulation Language |
| ISTRAN | 1973 | ↓⊕Germany | ||
| JAP | 1973 | ↓⊕Poland | ||
| JOVIAL J73 | 1973 | ↓⊕Jovials | ↓⊕United States | 1973 Version of JOVIAL |
| KAPPA-SPEAKEASY | 1973 | ↓⊕United States | ||
| Keen Labanotation Compiler | 1973 | ↓⊕Australia | ||
| LAMA | 1973 | ↓⊕Robotics | ↓⊕United States | |
| LE/1 | 1973 | ↓⊕France | ||
| LINGOL | 1973 | ↓⊕United States | ||
| LIS | 1973 | ↓⊕Wirth Algols | ↓⊕France | Langage Implementation Systeme - protoAda |
| LLAMA | 1973 | ↓⊕Robotics | ↓⊕United States | Robotics control language |
| LMAD | 1973 | |||
| Lorel | 1973 | ↓⊕Japan | ||
| LOT | 1973 | |||
| LPL | 1973 | ↓⊕List | ↓⊕United States | List processing language |
| MaGen/PDS | 1973 | ↓⊕United States | ||
| MAPL | 1973 | ↓⊕United States | ||
| Marseille Prolog | 1973 | ↓⊕Horn clause | ↓⊕France | |
| MBALM | 1973 | ↓⊕United States | Microprogrammed BALM | |
| METASIM | 1973 | ↓⊕United States | ||
| MFS | 1973 | ↓⊕France | ||
| MINI | 1973 | ↓⊕Robotics | ↓⊕United States | robotics language |
| Mizar | 1973 | ↓⊕Algebraic | ↓⊕Poland | |
| ML | 1973 | ↓⊕Strict evaluation FPs | ↓⊕United Kingdom | Meta Language |
| MORTRAN | 1973 | ↓⊕Non Standard FIV | ↓⊕United States | Dialect of FORTRAN for structural programming |
| MORTRAN 2 | 1973 | ↓⊕Non Standard FIV | ↓⊕United States | |
| M-Prolog | 1973 | ↓⊕Horn clause | ↓⊕France | |
| MUSIC 11 | 1973 | ↓⊕Sound-control | ↓⊕United States | Musical composition language |
| MUSICOL | 1973 | |||
| Nucleus | 1973 | |||
| OL/2 | 1973 | ↓⊕United States | ||
| ORAKEL | 1973 | |||
| OSIRIS III | 1973 | ↓⊕Statistical | ↓⊕United States | |
| PAD | 1973 | ↓⊕Interface and windowing | ↓⊕Germany | Programming by example |
| Partridge | 1973 | ↓⊕Grammar and Syntax-oriented | ↓⊕United States | |
| PAS-II | 1973 | ↓⊕United States | ||
| PD Strudl | 1973 | ↓⊕Civil | ↓⊕United States | Phi Delta STRUDL |
| PDL | 1973 | ↓⊕United States | Program Design Language | |
| PDL/74 | 1973 | ↓⊕United States | Program Design Language 1974 | |
| PEGS 3 | 1973 | ↓⊕United States | ||
| PILOT-73 | 1973 | |||
| PIVOT Input language | 1973 | ↓⊕United States | INput language for the PIVOT theorem prover | |
| PL/CD | 1973 | ↓⊕United States | ||
| PL/CI | 1973 | ↓⊕United States | ||
| PL/EXUS | 1973 | ↓⊕XPLs | ↓⊕United States | USer-extensible XPL |
| PL316 | 1973 | ↓⊕PL-360s | ↓⊕United Kingdom | 316 port of PL-360 |
| PLANNER-73 | 1973 | ↓⊕United States | ||
| PLCV | 1973 | ↓⊕United States | ||
| POGOL | 1973 | ↓⊕Editing and processing | ↓⊕United States | Advanced file manipulation system |
| POP-10 | 1973 | ↓⊕Canada | ||
| POPCORN | 1973 | ↓⊕United Kingdom | ||
| PORT-ALG | 1973 | |||
| PROPOSAL WRITING | 1973 | |||
| PS 1 | 1973 | |||
| PSL/II | 1973 | ↓⊕United States | Problem Statement Language/version 2 | |
| QLISP | 1973 | ↓⊕Lazy Evaluation LISPs | ↓⊕United States | Questioning LISP |
| RCL | 1973 | ↓⊕United States | Reduced Control Language | |
| SB-Pascal | 1973 | ↓⊕Pascals | ↓⊕United States | |
| SB-Prolog | 1973 | ↓⊕Horn clause | ↓⊕United States | |
| SDL | 1973 | Burroughs Software Development Language | ||
| SEARCH | 1973 | ↓⊕United States | ||
| SED | 1973 | ↓⊕Editing and processing | ↓⊕United States | Stream Editor |
| SEMANOL(73) | 1973 | ↓⊕United States | ||
| SEQUEL | 1973 | ↓⊕RDBMs | ↓⊕United States | Limited expression language for data querying |
| SETLB | 1973 | ↓⊕United States | ||
| SETS | 1973 | |||
| SFTRAN | 1973 | ↓⊕United States | ||
| SFTRAN3 | 1973 | ↓⊕Non Standard FIV | ↓⊕United States | JPL Structured Fortran |
| SHRIMP | 1973 | ↓⊕Columnar sheets | ↓⊕United States | OMNITAB variant |
| SIMCMP | 1973 | ↓⊕United States | ||
| Simnon | 1973 | |||
| SIMTRAN | 1973 | ↓⊕United States | ||
| SIMUL | 1973 | ↓⊕United Kingdom | ||
| SIMUL. DIG. SYST. | 1973 | |||
| SITBOL | 1973 | ↓⊕United States | ||
| SPECL | 1973 | ↓⊕United States | ||
| SPICE | 1973 | ↓⊕2d shape | ↓⊕United States | Simulation Program with Integrated Circuit Emphasis |
| SPIFFY | 1973 | ↓⊕Non Standard FIV | ↓⊕United States | Structured FORTRAN IV from BOEING |
| SPIL | 1973 | ↓⊕United States | ||
| SPL | 1973 | ↓⊕United States | SYMBOL Programming Language | |
| STS | 1973 | |||
| SWL | 1973 | |||
| SYMPL | 1973 | ↓⊕United States | CDC systems language | |
| SYSTEM 2000 | 1973 | ↓⊕Labelled Matrix | ↓⊕United States | |
| TASS | 1973 | ↓⊕Assemblers | ↓⊕United Kingdom | Intermediate language produced by the Manchester SISAL compiler |
| TBLTRN | 1973 | ↓⊕United States | ||
| TICS | 1973 | |||
| TOPPS | 1973 | ↓⊕Canada | ||
| TROLL | 1973 | ↓⊕Forecasting | ↓⊕United States | Array language for econometrics |
| TXTPAD | 1973 | ↓⊕United States | ||
| UCI-LISP | 1973 | ↓⊕Lazy Evaluation LISPs | ↓⊕United States | |
| UNIQUE | 1973 | ↓⊕Command systems | ↓⊕United States | Job control language |
| UNRAVEL | 1973 | |||
| VERS2 | 1973 | ↓⊕Generalised programming | ↓⊕United States | Generalised programming language |
| VIPTRAN | 1973 | ↓⊕United States | ||
| VIS | 1973 | ↓⊕United States | ||
| Vlisp | 1973 | ↓⊕Lazy Evaluation LISPs | ↓⊕France | |
| WAVE | 1973 | ↓⊕United States | Robotics language | |
| WFL | 1973 | |||
| Wolofsky Labanotation Compiler | 1973 | ↓⊕United States | ||
| WRITECOURSE | 1973 | ↓⊕CAI languages | ||
| WYLBUR | 1973 | ↓⊕United States | ||
| ZAPP | 1973 | ↓⊕Animation | ↓⊕Canada | Animation generation language |