| *MOD | 1980 | ↓⊕Pascals | ↓⊕United States | Concurrent MOdula |
| 51forth | 1980 | ↓⊕Stack | ↓⊕United States | Forth for the 8051 |
| ACL | 1980 | ↓⊕Australia | A Coroutine Language | |
| Ada1 | 1980 | ↓⊕United States | ||
| AdaTran | 1980 | ↓⊕United States | ||
| ADLIB | 1980 | ↓⊕Digital | ↓⊕United States | Superset of PASCAL with concurrency |
| AE | 1980 | ↓⊕United States | embeddable c interpeter | |
| AIDA | 1980 | ↓⊕Germany | intermediate representation language for Ada | |
| ALGOL 68+ | 1980 | ↓⊕True ALGOL68s | ↓⊕Netherlands | Superlanguage of ALGOL 68 |
| ALGOL(E) | 1980 | ↓⊕True ALGOL60s | ↓⊕United Kingdom | ICL Algol 60 |
| ALICE | 1980 | ↓⊕Array | ↓⊕Canada | Typed APL |
| AML | 1980 | ↓⊕United States | High-level robotics language | |
| And/Or | 1980 | ↓⊕Israel | Simple tree-like programming/specification language | |
| Andante | 1980 | |||
| ANORAD | 1980 | ↓⊕United States | ||
| ANSI BASIC | 1980 | ↓⊕United States | Standardised BASIC | |
| ANVIL | 1980 | |||
| Apple Pascal | 1980 | ↓⊕Pascals | ↓⊕United States | UCSD Pascal for the Apple II |
| APSE | 1980 | ↓⊕United States | Ada Programming Support Environment | |
| ARES | 1980 | ↓⊕Japan | ||
| ASI/INQUIRY | 1980 | ↓⊕United States | ||
| Avtokod Elebrus | 1980 | ↓⊕Moscow languages | ↓⊕Russian Federation | |
| Babbage | 1980 | ↓⊕PL-360s | ↓⊕United Kingdom | |
| Barrel | 1980 | ↓⊕United States | ||
| BCS Query Language | 1980 | ↓⊕Network DB | ↓⊕United Kingdom | |
| BDFL | 1980 | |||
| BICON | 1980 | ↓⊕United States | ||
| BLISP | 1980 | ↓⊕Lazy Evaluation LISPs | ↓⊕United States | |
| BMAC | 1980 | ↓⊕United States | ||
| BRAND X | 1980 | ↓⊕United States | ||
| BTPS | 1980 | ↓⊕United States | ||
| C with Classes | 1980 | ↓⊕United States | OO Extensions to C | |
| CAN/8 | 1980 | Computer aided instruction language | ||
| CAP1 | 1980 | ↓⊕Japan | ||
| CBASIC | 1980 | ↓⊕United States | ||
| CCS | 1980 | ↓⊕United Kingdom | Calculus of Communicating Systems | |
| CD/KS | 1980 | ↓⊕United States | ||
| CHAMIL | 1980 | ↓⊕United States | ||
| Charrette Ada | 1980 | ↓⊕France | Early Ada subset | |
| CHILL | 1980 | ↓⊕Pascals | ↓⊕International | CCITT HIgh-Level Language |
| CHILL-80 | 1980 | ↓⊕International | ||
| CIF | 1980 | |||
| CIP-L | 1980 | ↓⊕Definition languages | ↓⊕Germany | |
| CLP | 1980 | ↓⊕United States | Constraint Logic Programming. | |
| COMAL-80 | 1980 | ↓⊕Denmark | ||
| Conceptual schema language II | 1980 | ↓⊕Germany | ||
| Concurrent Euclid | 1980 | ↓⊕Canada | Simple Euclid with concurrent extensions | |
| CONDOR | 1980 | ↓⊕United States | ||
| CONLAN | 1980 | ↓⊕Germany | Hardware description language | |
| CSP/80 | 1980 | ↓⊕United Kingdom | ||
| DAD | 1980 | |||
| Dare P/l | 1980 | ↓⊕United States | ||
| dBASE II | 1980 | ↓⊕United States | ||
| DCG | 1980 | ↓⊕France | ||
| DDL | 1980 | ↓⊕Brazil | Data definition language | |
| DELTA | 1980 | ↓⊕Australia | ||
| Descartes | 1980 | ↓⊕Russian Federation | ||
| DIAGRAM | 1980 | |||
| Distributed Smalltalk | 1980 | ↓⊕United States | ||
| DML | 1980 | ↓⊕Nigeria | ||
| DML | 1980 | |||
| DNA | 1980 | |||
| DOS-ES LISP | 1980 | ↓⊕Lazy Evaluation LISPs | ||
| DYNAMO III | 1980 | ↓⊕United States | ||
| Dynamo III/370 | 1980 | ↓⊕United States | ||
| Edison | 1980 | ↓⊕United States | Simplified coroutine Pascal for teaching | |
| EDQUSE | 1980 | |||
| EISI-EAL | 1980 | ↓⊕United States | Engineering Analysis Language | |
| ELISP | 1980 | ↓⊕Lazy Evaluation LISPs | ↓⊕United States | |
| EMACS LISP | 1980 | ↓⊕Lazy Evaluation LISPs | ↓⊕United States | |
| esim | 1980 | |||
| EUMEL | 1980 | ↓⊕Germany | ||
| FAD | 1980 | ↓⊕United States | ||
| FLAT | 1980 | |||
| Flavors | 1980 | ↓⊕United States | ||
| Flex 2 | 1980 | |||
| FORALL | 1980 | ↓⊕Non Standard F77 | ↓⊕Australia | User-extensible conversational dialect of Fortran |
| Formal | 1980 | ↓⊕Japan | ||
| FranzLISP | 1980 | ↓⊕Lazy Evaluation LISPs | ↓⊕United States | a MACLISP dialect of LISP |
| GEMS | 1980 | ↓⊕2d shape | Mathematical simulation language | |
| GLISP | 1980 | ↓⊕Lazy Evaluation LISPs | ↓⊕United States | |
| GLISP | 1980 | ↓⊕Lazy Evaluation LISPs | ↓⊕United States | Lisp with structural abstraction |
| GLUG | 1980 | ↓⊕Other DPLs | ↓⊕United States | Report generator language for GEAC systems |
| GPL | 1980 | ↓⊕United States | Honeywell Programming Language | |
| GQL | 1980 | |||
| Graphics Language | 1980 | |||
| HCPRVR | 1980 | ↓⊕United States | Horn clause prover | |
| HELP | 1980 | Hybrid high- and low-level robotics language | ||
| HI | 1980 | ↓⊕United States | ||
| HIBOL | 1980 | ↓⊕United Kingdom | Infotec DIBOL | |
| HNROFF | 1980 | ↓⊕Israel | Hebrew formatter based on NROFF | |
| HTROFF | 1980 | ↓⊕Israel | Hebrew formatter based on TROFF | |
| HUGO | 1980 | ↓⊕Other DPLs | ↓⊕United States | Online systems language for GEAC |
| Icon | 1980 | ↓⊕Substrings | ↓⊕United States | String manipulation language with generator capabilities |
| IDEAL | 1980 | ↓⊕United States | ||
| IL | 1980 | |||
| IMP 80 | 1980 | ↓⊕Early Autocodes | ↓⊕United Kingdom | |
| IMS | 1980 | ↓⊕Event scheduling | Simulation language | |
| IQL | 1980 | ↓⊕Other DPLs | ↓⊕Canada | Intermediate Query Language |
| LANAC | 1980 | ↓⊕Brazil | ||
| LaTeX | 1980 | ↓⊕United States | Document structuring extensions to TeX | |
| LEM | 1980 | ↓⊕France | ||
| LFP | 1980 | ↓⊕United States | ||
| LOGIST | 1980 | ↓⊕Statistical | ↓⊕France | |
| LOGLISP | 1980 | ↓⊕Lazy Evaluation LISPs | ↓⊕United States | LOGIC, embedded in LISP |
| LOM | 1980 | |||
| LPL | 1980 | Fuzzy logic programming language | ||
| LTR | 1980 | ↓⊕France | Langage Temps-Réel - ProtoAda | |
| MAB | 1980 | ↓⊕United States | MAcro Basic | |
| Maple | 1980 | ↓⊕Canada | Maple | |
| MARBLE | 1980 | |||
| Mathsy | 1980 | ↓⊕Matrix | ↓⊕United States | Interactive mathematics and graphics |
| MCOBOL | 1980 | ↓⊕United Kingdom | Macro extensions to COBOL | |
| MEDIC | 1980 | |||
| MELD | 1980 | ↓⊕United States | ||
| METALOG | 1980 | |||
| Micro SPL | 1980 | ↓⊕United States | ||
| MINI | 1980 | |||
| MINT | 1980 | ↓⊕United Kingdom | ||
| MODLISP | 1980 | ↓⊕Lazy Evaluation LISPs | ↓⊕United States | |
| Modular C | 1980 | ↓⊕United States | Preprocessor-based extension to C allowing modules | |
| MORAL | 1980 | Systems design language | ||
| More array theory | 1980 | ↓⊕United States | ||
| MPL | 1980 | ↓⊕United States | Motorola Programming Language | |
| M-Prolog | 1980 | ↓⊕Horn clause | Modular Prolog | |
| MRS | 1980 | ↓⊕United States | ||
| Nano | 1980 | ↓⊕Japan | ||
| NPL | 1980 | ↓⊕United States | Non-Procedural Language | |
| OBE | 1980 | ↓⊕United States | ||
| Ohsuga KRL | 1980 | |||
| OMNITAB 80 | 1980 | ↓⊕Columnar sheets | ↓⊕United States | Spreadsheet program |
| OPTRAN | 1980 | ↓⊕Germany | ||
| OSIRIS IV | 1980 | ↓⊕Statistical | ↓⊕United States | |
| Outline | 1980 | Visual languages | ||
| Pascal* | 1980 | ↓⊕Pascals | ↓⊕United States | |
| Pascal/R | 1980 | ↓⊕Pascals | ↓⊕Germany | |
| Pascal-80 | 1980 | ↓⊕Pascals | ↓⊕Denmark | |
| PASCAL-I | 1980 | ↓⊕Pascals | ↓⊕International | |
| PASSIM | 1980 | ↓⊕United States | Simulation language based opn PASCAL | |
| PDL/81 | 1980 | ↓⊕United States | Program Design Language 1981 | |
| PFL | 1980 | |||
| PICTUREBALM | 1980 | ↓⊕United States | ||
| PIL | 1980 | ↓⊕United States | Pascal Instructional Language - CAI Language | |
| PL/I GPSS | 1980 | |||
| POOL | 1980 | ↓⊕Netherlands | Parallel Object-Oriented Language | |
| Porta-SIMD | 1980 | |||
| Post-X | 1980 | ↓⊕United Kingdom | ||
| PRAXIS | 1980 | ↓⊕United States | High Level machine oriented algebraic computer language | |
| QPE | 1980 | ↓⊕United States | ||
| QRP | 1980 | ↓⊕Network DB | ↓⊕United States | Honeywell query language |
| REC | 1980 | ↓⊕Mexico | ||
| REC/SM | 1980 | ↓⊕Mexico | ||
| RediLisp | 1980 | ↓⊕Lazy Evaluation LISPs | ↓⊕United States | |
| RLL | 1980 | ↓⊕United States | ||
| RT1 | 1980 | |||
| SCL | 1980 | ↓⊕United Kingdom | Command language for the VME/B | |
| Scratchpad II | 1980 | ↓⊕United States | ||
| SDDL | 1980 | ↓⊕Nigeria | ||
| SDL | 1980 | ↓⊕United States | String Definition Language | |
| SDL/I | 1980 | ↓⊕Other DPLs | ↓⊕United States | Simulation language |
| SDML | 1980 | ↓⊕Nigeria | ||
| SIMPAS | 1980 | ↓⊕Event scheduling | ↓⊕United States | |
| SIMPLE | 1980 | |||
| Siprol | 1980 | |||
| SLAM II | 1980 | ↓⊕Hybrid | ↓⊕United States | Extension of SLAM |
| SLANG | 1980 | |||
| Small-C | 1980 | |||
| Smalltalk-80 | 1980 | ↓⊕United States | ||
| SOS | 1980 | Persistent object langauge | ||
| S-Pascal | 1980 | ↓⊕United Kingdom | ||
| Spice Lisp | 1980 | ↓⊕Lazy Evaluation LISPs | ↓⊕United States | |
| StarMOD | 1980 | ↓⊕United States | ||
| Steele | 1980 | |||
| Stoneman | 1980 | ↓⊕United States | ||
| STRUM2 | 1980 | ↓⊕United States | ||
| STSC APL | 1980 | ↓⊕Array | ↓⊕United States | Scientific Time-Sharing Corp APL |
| SUMMER | 1980 | ↓⊕Netherlands | String and pattern language | |
| SYNGLISH | 1980 | |||
| Taxis | 1980 | ↓⊕Canada | ||
| TCOL | 1980 | |||
| TCOL Ada | 1980 | ↓⊕United States | ||
| The Mathematical Vernacular | 1980 | ↓⊕Netherlands | ||
| TMDL | 1980 | |||
| UDL | 1980 | ↓⊕United States | Unified Data Language | |
| UFORT | 1980 | ↓⊕United States | Fortran running on the PASCAL machine | |
| VAL | 1980 | ↓⊕Motion-oriented | ↓⊕United States | Variable Assembly Language |
| VAXIMA | 1980 | ↓⊕United States | ||
| VISTA | 1980 | ↓⊕Norway | Norwegian 4gl | |
| VULCAN | 1980 | ↓⊕United States | CP/M port of JPLDIS which evolved into dBASE II | |
| WCRL | 1980 | Database language | ||
| WESPOL | 1980 | ↓⊕United States | POL writing system | |
| XCY | 1980 | ↓⊕China | ||
| YAMIL | 1980 | |||
| Z | 1980 | ↓⊕United Kingdom | ||
| ZIL | 1980 | ↓⊕United States | Zork Implementation Language | |
| ZX Cesil | 1980 | ↓⊕United Kingdom |