| Hack | — | 2014 | Meta Platforms |
| Haggis | functional programming, imperative programming, object-oriented programming | — | — |
| HAL/S | structured programming, procedural programming | 1978 | — |
| Hale | concurrent computing, structured programming, imperative programming, actor model | 2026 | — |
| Halide | functional programming, parallel programming | 2012 | Massachusetts Institute of Technology |
| Hamilton C shell | — | — | Nicole Hamilton |
| Haml | web template system | — | Nathan Weizenbaum, Hampton Lintorn-Catlin |
| Handel-C | imperative programming | 2005 | Mentor Graphics |
| Harbour | imperative programming, multi-paradigm programming, declarative programming, object-oriented programming, procedural programming, functional programming, reflective programming | 1999 | — |
| Hare | — | — | Drew DeVault |
| Hartmann pipeline | function-level programming, concatenative programming, dataflow programming, functional programming | 1986 | IBM |
| Haskell | functional programming, purely functional programming, non-strict programming | 1990 | Paul Hudak, Philip Wadler, Erik Meijer, John Hughes, Lennart Augustsson, Simon Peyton Jones |
| Haxe | object-oriented programming, multi-paradigm programming, functional programming, generic programming | 2005 | Simon Krajewski, Cauê Waneck, Haxe Foudation, Nicolas Cannasse |
| HC-BASIC | — | 1984 | — |
| Helium | — | — | Utrecht University |
| Hermes | — | — | IBM Thomas J. Watson Research Center |
| Hewlett-Packard Graphics Language | — | — | Hewlett-Packard |
| HiAsm | — | — | — |
| Hierarchical Music Specification Language | — | — | Larry Polansky, David Rosenboom |
| High Level Assembly | object-oriented programming | — | Randall Hyde |
| High Level Shader Language | — | — | Microsoft |
| High Performance Fortran | concurrent computing | 1993 | — |
| Himawari | — | — | — |
| Hoc | — | — | Rob Pike, Brian Kernighan |
| Hollywood | procedural programming | 2002 | — |
| HolyC | — | — | — |
| Honeywell ARGUS | — | — | Honeywell |
| Hop | multi-paradigm programming, functional programming, multitier programming | 2006 | — |
| Hope | functional programming | — | University of Edinburgh |
| Hopscotch | visual programming language | — | — |
| Hot Soup Processor | — | 1996 | — |
| HP BASIC for OpenVMS | imperative programming | — | Digital Equipment Corporation |
| HP Time-Shared BASIC | imperative programming | — | — |
| HPCC | declarative programming | — | — |
| Hugo | — | — | — |
| Hume | functional programming | 2000 | — |
| Hy | object-oriented programming, metaprogramming, imperative programming, procedural programming, generic programming | 2013 | — |
| Hybris | procedural programming | 2009 | — |
| Hybrix programming language | procedural programming | — | — |
| Hyperscript | — | 2020 | — |
| HyperTalk | procedural programming, event-driven programming | 1987 | Apple Inc. |