HAL/S
HALGOL
HALMAT
Haskell
HASL
HCLP
HCPRVR
HDFL
HDM
HELP[1]
HELP[2]
HELP[3]
HEQS
HERAKLIT
Hermes
HIBOL
High Performance Fortran
HiLog
HINT
HLISP
HLL
HOL
Honeywell-800 Business Compiler
HOOK
Hope
Hope+
Hope+C
HOS-STPL
HPCode
HPCode-Plus
HPF
HP-GL
HP-GL/2
HPL
HSL-FX
HTML
HTML+
HUGO
HURON
Hybrid
Hyper-C
Hyperscript
HyperTalk
HyTime