| 2.PAK | 1975 | ↓⊕Canada | AI language with coroutines. | |
| ABLE | 1975 | ↓⊕Other DPLs | ↓⊕United States | Auditors business language |
| AGL | 1975 | ↓⊕France | ||
| ALEPH | 1975 | ↓⊕Other Algol 60s | ↓⊕Netherlands | A Language Encouraging Program Hierarchy |
| ALGOL 68 Revised | 1975 | ↓⊕True ALGOL68s | ↓⊕International | |
| ALGOL 68C | 1975 | ↓⊕True ALGOL68s | ↓⊕United Kingdom | Cambridge Algol 68 |
| Algol H | 1975 | ↓⊕True ALGOL68s | ↓⊕United Kingdom | Proposed extensions to the mode system of Algol 68 |
| Algol S | 1975 | ↓⊕True ALGOL60s | ↓⊕United Kingdom | |
| ALGOSIM | 1975 | ↓⊕Event scheduling | ↓⊕United States | Algol 68 based simulation |
| AMPL | 1975 | ↓⊕Language-oriented | ↓⊕United States | Manusript preparation language |
| APAL | 1975 | ↓⊕United Kingdom | ||
| APLBOL | 1975 | ↓⊕Array | ↓⊕United States | APL written in SNOBOL |
| APLUM | 1975 | ↓⊕Array | ↓⊕United States | APL2 for UM |
| ASPLE | 1975 | ↓⊕United States | Paper language for demonstrating W-Grammars | |
| B | 1975 | ↓⊕Netherlands | Simple interactive programming environment | |
| B4Tran | 1975 | ↓⊕Non Standard FIV | ↓⊕United States | Structured Fortran |
| BALG | 1975 | ↓⊕Germany | ||
| BASIC-PLUS | 1975 | ↓⊕Street basics | ↓⊕United States | |
| BCY | 1975 | ↓⊕Other Algol 60s | ↓⊕China | Chinese ALGOL 60 |
| BESM Planner | 1975 | ↓⊕Forecasting | ↓⊕Russian Federation | |
| BETA | 1975 | ↓⊕Simple | ↓⊕Norway | Object oriented language |
| BGRAF2 | 1975 | ↓⊕Israel | Real-time graphics language | |
| BLISS-11 | 1975 | ↓⊕United States | Bliss for PDP-11 | |
| Burge | 1975 | ↓⊕United Kingdom | ||
| CABALA | 1975 | ↓⊕Scientific Basics | ↓⊕Italy | Extensions to Basic for laboratory work |
| CAYLEY | 1975 | ↓⊕Symbolic | ↓⊕Australia | Symbolic maths for group theory |
| CBCL | 1975 | ↓⊕United States | ||
| CDC-Pascal | 1975 | ↓⊕Pascals | ↓⊕United States | Pascal for te CDC 6000 |
| CDS/ISIS | 1975 | ↓⊕Hierarchical DB | ↓⊕France | UNESCO ISIS |
| CELLSIM II | 1975 | ↓⊕Systems | ↓⊕United States | Cell population simulation language |
| CENTRAN | 1975 | ↓⊕Microprogramming and HLAs | ↓⊕United States | High level macro assembler |
| CHILI | 1975 | |||
| CINTURN II | 1975 | ↓⊕Numerical Control | ||
| CLYDE | 1975 | |||
| COMOL | 1975 | ↓⊕Russian Federation | ||
| Coroutine Pascal | 1975 | ↓⊕Pascals | ↓⊕United States | |
| CPL | 1975 | ↓⊕United States | DARPA Common Prototyping Language | |
| CS-4 | 1975 | ↓⊕Wirth Algols | ↓⊕United States | Intermetrics System Lanugage |
| csh | 1975 | ↓⊕Command systems | ↓⊕United States | Command language and environmnet for UNIX |
| CSL | 1975 | ↓⊕United Kingdom | ||
| CSP/k | 1975 | ↓⊕Canada | Concurrent SP/k | |
| CSSA | 1975 | ↓⊕Germany | ||
| CUPID | 1975 | ↓⊕Other visual query languages | ↓⊕United States | Graphic interactive query language |
| Dakin | 1975 | ↓⊕Command systems | ↓⊕United Kingdom | Generalised Job Control Language |
| DAP Fortran | 1975 | ↓⊕Non Standard FIV | ↓⊕United Kingdom | Parallel fortran |
| DARE P | 1975 | ↓⊕Differential Equations | ↓⊕United States | Continuous simulation languages |
| DARE-II | 1975 | ↓⊕Differential Equations | ↓⊕United States | Continuous simulation languages |
| DARMS | 1975 | ↓⊕Sound-Synthesis | ↓⊕United States | Music programming language |
| DCG | 1975 | ↓⊕Sweden | ||
| DECL | 1975 | |||
| DEFINE | 1975 | ↓⊕United States | ||
| DELISA | 1975 | ↓⊕United States | ||
| DELTA | 1975 | ↓⊕Decision tables | ↓⊕Switzerland | Decision table language |
| DELtran | 1975 | ↓⊕FORTRAN IV standard | ↓⊕United States | Fortran interpreted to DEL |
| DIET | 1975 | ↓⊕United States | ||
| DL* | 1975 | ↓⊕United States | ||
| DMAP | 1975 | ↓⊕COBOL-68 | ↓⊕United States | Parallel Cobol |
| DOD specification | 1975 | ↓⊕Wirth Algols | ↓⊕United States | |
| DSL | 1975 | ↓⊕Denmark | Specification language | |
| DYNAMO HI/370 | 1975 | ↓⊕United States | ||
| ECSS | 1975 | ↓⊕United States | Simluations language | |
| ECSS II | 1975 | ↓⊕United States | ||
| ECSSL | 1975 | ↓⊕Germany | ||
| ELP | 1975 | ↓⊕United States | ||
| EMPL | 1975 | |||
| EPS | 1975 | ↓⊕United States | ||
| EQN | 1975 | ↓⊕United States | ||
| FILES | 1975 | ↓⊕Other DPLs | ↓⊕United States | Retrieval language for engineering |
| FLEX | 1975 | ↓⊕United States | ||
| FLING | 1975 | ↓⊕United States | ||
| FOCAL-12 | 1975 | ↓⊕Generation of JOSS I | ↓⊕United States | FOCAL for the PDP-12 |
| FORAL | 1975 | ↓⊕United States | ||
| Framework Simula | 1975 | ↓⊕Event scheduling | ↓⊕Canada | Simula with frameworks |
| Galois | 1975 | ↓⊕Symbolic | ↓⊕Australia | Symbolic maths |
| GINO-F | 1975 | ↓⊕United Kingdom | ||
| GPM | 1975 | |||
| GPSS/H | 1975 | ↓⊕Process interaction | ↓⊕United States | Extended GPSS |
| GRAP | 1975 | ↓⊕United States | ||
| Grapheasy | 1975 | ↓⊕United States | ||
| Greif formal specification language | 1975 | ↓⊕United States | ||
| GRIP | 1975 | ↓⊕United States | ||
| GRIP-75 | 1975 | ↓⊕United States | ||
| GT STRUDL | 1975 | ↓⊕Civil | ↓⊕United States | Georgia Tech STRUDL |
| GTL | 1975 | ↓⊕Other lambda | ↓⊕Australia | General Tuple Language |
| HOS-STPL | 1975 | ↓⊕United States | ||
| HyCom | 1975 | |||
| IDL | 1975 | ↓⊕Visualisation | ↓⊕United States | Interactive Data analysis Language |
| IMAGE | 1975 | ↓⊕Canada | ||
| ISL-II | 1975 | ↓⊕Event scheduling | ↓⊕United States | Interactive simulation language |
| LALSD | 1975 | |||
| LALSD II | 1975 | |||
| LESK | 1975 | ↓⊕Canada | ||
| Lex | 1975 | ↓⊕Grammar and Syntax-oriented | ↓⊕United States | Scanner generator |
| Lex | 1975 | ↓⊕United States | Specification language | |
| LIMP | 1975 | |||
| LogLan | 1975 | |||
| LOOP | 1975 | |||
| LUCID | 1975 | ↓⊕Single-assignment | ↓⊕Canada | dataflow language |
| MACROS | 1975 | ↓⊕Macros | ||
| MAGEN II | 1975 | ↓⊕Arithmetic | ↓⊕United States | Matrix Generator |
| MagmaLISP | 1975 | ↓⊕Lazy Evaluation LISPs | ↓⊕Italy | |
| MAPLE | 1975 | ↓⊕Robotics | ↓⊕United States | IBM Robotics Assembly |
| MBA | 1975 | |||
| MIL75 | 1975 | ↓⊕United States | Module Interconnection Language | |
| MINICODE | 1975 | ↓⊕Assemblers | ↓⊕Canada | |
| MINI-EXPLOR | 1975 | ↓⊕Animation | ↓⊕United States | Animatino language |
| Minipascal | 1975 | ↓⊕Pascals | ↓⊕Germany | |
| Minnesota Pascal 6000 | 1975 | ↓⊕Pascals | ↓⊕United States | |
| MIP | 1975 | ↓⊕United States | ||
| MIRA | 1975 | ↓⊕Canada | ||
| MIT-STRUDL | 1975 | ↓⊕Civil | ↓⊕United States | Evolution of STRUDL-II |
| MLAB | 1975 | |||
| ML-ll | 1975 | ↓⊕United States | ||
| MLYACC | 1975 | ↓⊕Grammar and Syntax-oriented | ↓⊕United Kingdom | |
| MODEL | 1975 | ↓⊕United States | ||
| MORTRAN 3 | 1975 | ↓⊕Non Standard FIV | ↓⊕United States | |
| Mouse | 1975 | ↓⊕Stack | ↓⊕United States | |
| MU5 Autocode | 1975 | ↓⊕3G Autocodes | ↓⊕United Kingdom | Autocode for Machester MU5 computer |
| MUSIC 6 | 1975 | ↓⊕Sound-Synthesis | ↓⊕United States | Musical composition language |
| Nqthm | 1975 | ↓⊕United States | ||
| OPAL | 1975 | |||
| PADL | 1975 | ↓⊕Robotics | ↓⊕United States | Rochester parts assembler language |
| Page | 1975 | ↓⊕Cell-based | ||
| Pascal (Jensen and Wirth) | 1975 | ↓⊕Pascals | ↓⊕Switzerland | 1975 revision of Pascal |
| Pascal-S | 1975 | ↓⊕Pascals | ↓⊕Switzerland | |
| Pfeiffer and Hoehne dialog language | 1975 | ↓⊕Interface and windowing | ↓⊕Germany | |
| PFORT | 1975 | ↓⊕United States | ||
| Phoenix | 1975 | ↓⊕Command systems | ↓⊕United Kingdom | Command language for IBM at Cambridge |
| PICTOL | 1975 | ↓⊕United States | ||
| PICTURES | 1975 | |||
| PIN | 1975 | ↓⊕United States | ||
| PL | 1975 | ↓⊕2d shape | ↓⊕Canada | Picture drawing language |
| PL/0 | 1975 | ↓⊕Wirth Algols | ↓⊕Switzerland | Model language of Wirth |
| PL/CV | 1975 | ↓⊕Predicate | ↓⊕United States | Verifying logical dialect of PL/CS |
| PL-6 | 1975 | ↓⊕Other PL/Is | ↓⊕France | |
| PLASMA | 1975 | ↓⊕United States | ||
| Platon | 1975 | ↓⊕Pascals | ↓⊕Denmark | Distributed Pascal |
| POLAC | 1975 | ↓⊕United States | ||
| Pop-11 | 1975 | ↓⊕United Kingdom | ||
| Principle of sufficient reason | 1975 | ↓⊕United States | Structure reforms for distributed processing | |
| PROGRESS | 1975 | ↓⊕Austria | RT language for air traffic control | |
| PROSE | 1975 | ↓⊕Hybrid | ↓⊕United States | Hybrid simulation language |
| Protel | 1975 | ↓⊕Pascals | ↓⊕Canada | Language with distributed modularity |
| Pygmalion | 1975 | ↓⊕Reactive | Visual languages | |
| QBE | 1975 | ↓⊕RDBMs | ↓⊕United States | Query By Example |
| RABBIT | 1975 | ↓⊕United States | Compiler for Scheme | |
| RATFOR | 1975 | ↓⊕United States | ||
| RCMOL | 1975 | ↓⊕Symbolic assemblers | ↓⊕Denmark | RC Machine Oriented Language |
| REC | 1975 | ↓⊕United States | ||
| REL English | 1975 | ↓⊕United States | ||
| RTS | 1975 | |||
| S/SL | 1975 | ↓⊕Grammar and Syntax-oriented | ↓⊕Canada | Syntax/Semantic Language |
| SAINT II | 1975 | ↓⊕United States | ||
| Scheme | 1975 | ↓⊕United States | ||
| Sheltran | 1975 | |||
| SIL | 1975 | ↓⊕United States | SNOBOL Implementation Language | |
| Simon 75 | 1975 | ↓⊕Event scheduling | ↓⊕United Kingdom | GPSS based Simula dialect |
| SKIMP | 1975 | ↓⊕Early Autocodes | ↓⊕United Kingdom | Teaching subset of IMP |
| SL5 | 1975 | ↓⊕United States | ||
| SOL-370 | 1975 | ↓⊕United States | Port of SOL to IBM System 370 | |
| SP/k | 1975 | ↓⊕Other PL/Is | ↓⊕Canada | |
| SPECKLE | 1975 | ↓⊕Canada | ||
| SPG | 1975 | ↓⊕United Kingdom | ||
| SQL | 1975 | ↓⊕RDBMs | ↓⊕United States | |
| SQUARE | 1975 | ↓⊕RDBMs | ↓⊕United States | |
| STAB-11 | 1975 | |||
| STAPLE | 1975 | |||
| Strawman | 1975 | ↓⊕Wirth Algols | ↓⊕United States | |
| STUBOL | 1975 | ↓⊕COBOL-68 | ↓⊕New Zealand | Student's COBOL |
| TDFL | 1975 | ↓⊕United States | Textual Dataflow Language | |
| TOMAL | 1975 | ↓⊕United States | Realtime language | |
| Turingol | 1975 | |||
| Ultimate | 1975 | ↓⊕Ad hoc query languages | ↓⊕United States | Language for interactive Pick querying |
| UTLISP | 1975 | ↓⊕Lazy Evaluation LISPs | ↓⊕United States | |
| VARLIST | 1975 | |||
| VECTRAN | 1975 | ↓⊕United States | ||
| VML | 1975 | |||
| VS BASIC | 1975 | ↓⊕United States | Pooled resources BASIC for IBM 370 | |
| Wassertheil-Smoller | 1975 | ↓⊕Germany | ||
| Wizard | 1975 | |||
| Woodenman | 1975 | ↓⊕Wirth Algols | ↓⊕United States | |
| Wyvill | 1975 | ↓⊕Editing and processing | ||
| XTAB9 | 1975 | ↓⊕Statistical | ↓⊕United States | Statistical language |
| YACC | 1975 | ↓⊕Grammar and Syntax-oriented | ↓⊕United States | Compiler Compiler |