HAL/S
HALGOL
HALMAT
Haskell
HASL
HCLP
HCPRVR
HDFL
HDM
HDML
HELP[1]
HELP[2]
HELP[3]
HEQS
HERAKLIT
Hermes
HIBOL
High C
High Performance Fortran
HiLo
HiLog
HINT
HLISP
HLEVEL
HLL
HLP84
HMDES
HMSL
HOL
Honeywell-800 Business Compiler
HOOK
Hope
Hope+
Hope+C
HORB
HOS-STPL
HPCode
HPCode-Plus
HPF
HP-GL
HP-GL/2
HPJava
HPL[1]
HPL[2]
HQUEL
HQL
HSDL
HSL-FX
HSQL
HTML
HTML+
HUGO
HURON
Hybrid
Hyper-C
Hyperscript
HyperTalk
HyTime