| 2.PAK | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Canada | AI language with coroutines. | |
| ABLE | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Other DPLs | ⊕ United States | Auditors business language |
| AGL | 1975 | ⊕ France | |||
| ALEPH | 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ Other Algol 60s | ⊕ Netherlands | A Language Encouraging Program Hierarchy |
| ALGOL 68 Revised | 1975 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL68s | ⊕ International | |
| ALGOL 68C | 1975 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL68s | ⊕ United Kingdom | Cambridge Algol 68 |
| Algol H | 1975 | ↓ ↑ ⊕ Experimental and other | ⊕ True ALGOL68s | ⊕ United Kingdom | Proposed extensions to the mode system of Algol 68 |
| Algol S | 1975 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United Kingdom | |
| ALGOSIM | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ United States | Algol 68 based simulation |
| AMPL | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Language-oriented | ⊕ United States | Manusript preparation language |
| APAL | 1975 | ⊕ United Kingdom | |||
| APLBOL | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Array | ⊕ United States | APL written in SNOBOL |
| APLUM | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Array | ⊕ United States | APL2 for UM |
| ASPLE | 1975 | ⊕ United States | Paper language for demonstrating W-Grammars | ||
| B | 1975 | ↓ ↑ ⊕ On-Line | ⊕ Netherlands | Simple interactive programming environment | |
| B4Tran | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ 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 | ↓ ↑ ⊕ Multi-purpose | ⊕ Simple | ⊕ Norway | Object oriented language |
| BGRAF2 | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Israel | Real-time graphics language | |
| BLISS-11 | 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ United States | Bliss for PDP-11 | |
| Burge | 1975 | ⊕ United Kingdom | |||
| CABALA | 1975 | ↓ ↑ ⊕ Experimental and other | ⊕ Scientific Basics | ⊕ Italy | Extensions to Basic for laboratory work |
| CAYLEY | 1975 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Symbolic | ⊕ Australia | Symbolic maths for group theory |
| CBCL | 1975 | ⊕ United States | |||
| CDC-Pascal | 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ United States | Pascal for te CDC 6000 |
| CDS/ISIS | 1975 | ⊕ Hierarchical DB | ⊕ France | UNESCO ISIS | |
| CELLSIM II | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Systems | ⊕ United States | Cell population simulation language |
| CENTRAN | 1975 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ 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 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ United States | |
| CPL | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | DARPA Common Prototyping Language | |
| CS-4 | 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ Wirth Algols | ⊕ United States | Intermetrics System Lanugage |
| csh | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ 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 | ↓ ↑ ⊕ Business Data Processing | ⊕ Other visual query languages | ⊕ United States | Graphic interactive query language |
| Dakin | 1975 | ⊕ Command systems | ⊕ United Kingdom | Generalised Job Control Language | |
| DAP Fortran | 1975 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Non Standard FIV | ⊕ United Kingdom | Parallel fortran |
| DARE P | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Differential Equations | ⊕ United States | Continuous simulation languages |
| DARE-II | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Differential Equations | ⊕ United States | Continuous simulation languages |
| DARMS | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Sound-Synthesis | ⊕ United States | Music programming language |
| DCG | 1975 | ⊕ Sweden | |||
| DECL | 1975 | ||||
| DEFINE | 1975 | ⊕ United States | |||
| DELISA | 1975 | ↓ ↑ ⊕ String and List Processing | ⊕ United States | ||
| DELTA | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Decision tables | ⊕ Switzerland | Decision table language |
| DELtran | 1975 | ↓ ↑ ⊕ On-Line | ⊕ 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 | ↓ ↑ ⊕ Specialised Languages | ⊕ Germany | ||
| ELP | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | ||
| EMPL | 1975 | ||||
| EPS | 1975 | ⊕ United States | |||
| EQN | 1975 | ↓ ↑ ⊕ String and List Processing | ⊕ United States | ||
| FILES | 1975 | ↓ ↑ ⊕ Business Data Processing | ⊕ Other DPLs | ⊕ United States | Retrieval language for engineering |
| FLEX | 1975 | ⊕ United States | |||
| FLING | 1975 | ⊕ United States | |||
| FOCAL-12 | 1975 | ↓ ↑ ⊕ On-Line | ⊕ Generation of JOSS I | ⊕ United States | FOCAL for the PDP-12 |
| FORAL | 1975 | ↓ ↑ ⊕ Business Data Processing | ⊕ United States | ||
| Framework Simula | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ Canada | Simula with frameworks |
| Galois | 1975 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Symbolic | ⊕ Australia | Symbolic maths |
| GINO-F | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ United Kingdom | ||
| GPM | 1975 | ||||
| GPSS/H | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Process interaction | ⊕ United States | Extended GPSS |
| GRAP | 1975 | ↓ ↑ ⊕ Experimental and other | ⊕ United States | ||
| Grapheasy | 1975 | ⊕ United States | |||
| Greif formal specification language | 1975 | ↓ ↑ ⊕ Experimental and other | ⊕ United States | ||
| GRIP | 1975 | ⊕ United States | |||
| GRIP-75 | 1975 | ↓ ↑ ⊕ On-Line | ⊕ United States | ||
| GT STRUDL | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Civil | ⊕ United States | Georgia Tech STRUDL |
| GTL | 1975 | ⊕ Other lambda | ⊕ Australia | General Tuple Language | |
| HOS-STPL | 1975 | ⊕ United States | |||
| HyCom | 1975 | ||||
| IDL | 1975 | ↓ ↑ ⊕ Business Data Processing | ⊕ 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 | ↓ ↑ ⊕ Experimental and other | ⊕ Single-assignment | ⊕ Canada | dataflow language |
| MACROS | 1975 | ⊕ Macros | |||
| MAGEN II | 1975 | ⊕ Arithmetic | ⊕ United States | Matrix Generator | |
| MagmaLISP | 1975 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ⊕ Italy | |
| MAPLE | 1975 | ⊕ Robotics | ⊕ United States | IBM Robotics Assembly | |
| MBA | 1975 | ||||
| MIL75 | 1975 | ⊕ United States | Module Interconnection Language | ||
| MINICODE | 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ Assemblers | ⊕ Canada | |
| MINI-EXPLOR | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Animation | ⊕ United States | Animatino language |
| Minipascal | 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ Germany | |
| Minnesota Pascal 6000 | 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ United States | |
| MIP | 1975 | ⊕ United States | |||
| MIRA | 1975 | ⊕ Canada | |||
| MIT-STRUDL | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ 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 | ↓ ↑ ⊕ Multi-purpose | ⊕ 3G Autocodes | ⊕ United Kingdom | Autocode for Machester MU5 computer |
| MUSIC 6 | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Sound-Synthesis | ⊕ United States | Musical composition language |
| Nqthm | 1975 | ⊕ United States | |||
| OPAL | 1975 | ||||
| PADL | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Robotics | ⊕ United States | Rochester parts assembler language |
| Page | 1975 | ⊕ Cell-based | |||
| Pascal (Jensen and Wirth) | 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ Switzerland | 1975 revision of Pascal |
| Pascal-S | 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ Switzerland | |
| Pfeiffer and Hoehne dialog language | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Interface and windowing | ⊕ Germany | |
| PFORT | 1975 | ⊕ United States | |||
| Phoenix | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Command systems | ⊕ United Kingdom | Command language for IBM at Cambridge |
| PICTOL | 1975 | ⊕ United States | |||
| PICTURES | 1975 | ||||
| PIN | 1975 | ⊕ United States | |||
| PL | 1975 | ↓ ↑ ⊕ String and List Processing | ⊕ 2d shape | ⊕ Canada | Picture drawing language |
| PL/0 | 1975 | ⊕ Wirth Algols | ⊕ Switzerland | Model language of Wirth | |
| PL/CV | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Predicate | ⊕ United States | Verifying logical dialect of PL/CS |
| PL-6 | 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ Other PL/Is | ⊕ France | |
| PLASMA | 1975 | ⊕ United States | |||
| Platon | 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ 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 | ↓ ↑ ⊕ Specialised Languages | ⊕ Hybrid | ⊕ United States | Hybrid simulation language |
| Protel | 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ 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 | ↓ ↑ ⊕ Multi-purpose | ⊕ Symbolic assemblers | ⊕ Denmark | RC Machine Oriented Language |
| REC | 1975 | ⊕ United States | |||
| REL English | 1975 | ↓ ↑ ⊕ String and List Processing | ⊕ United States | ||
| RTS | 1975 | ||||
| S/SL | 1975 | ⊕ Grammar and Syntax-oriented | ⊕ Canada | Syntax/Semantic Language | |
| SAINT II | 1975 | ⊕ United States | |||
| Scheme | 1975 | ↓ ↑ ⊕ String and List Processing | ⊕ United States | ||
| Sheltran | 1975 | ||||
| SIL | 1975 | ⊕ United States | SNOBOL Implementation Language | ||
| Simon 75 | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ United Kingdom | GPSS based Simula dialect |
| SKIMP | 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ 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 | ↓ ↑ ⊕ Multi-purpose | ⊕ Other PL/Is | ⊕ Canada | |
| SPECKLE | 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ 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 | ↓ ↑ ⊕ Business Data Processing | ⊕ COBOL-68 | ⊕ New Zealand | Student's COBOL |
| TDFL | 1975 | ⊕ United States | Textual Dataflow Language | ||
| TOMAL | 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Realtime language | |
| Turingol | 1975 | ||||
| Ultimate | 1975 | ↓ ↑ ⊕ Business Data Processing | ⊕ Ad hoc query languages | ⊕ United States | Language for interactive Pick querying |
| UTLISP | 1975 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ⊕ United States | |
| VARLIST | 1975 | ||||
| VECTRAN | 1975 | ⊕ United States | |||
| VML | 1975 | ||||
| VS BASIC | 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ 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 | ↓ ↑ ⊕ Specialised Languages | ⊕ Statistical | ⊕ United States | Statistical language |
| YACC | 1975 | ⊕ Grammar and Syntax-oriented | ⊕ United States | Compiler Compiler |