- H
- Hemagglutinin neuraminidase
- HPA-1a
- HAS
- HDLBP
- HEPACAM
- HP
- HCAR2
- HADHB
- HAT
- HOXA1
- HOXA9
- HGSNAT
- HOXB
- HERC2
- HRD1
- HAO
- HAO1
- HSF
- HHAT
- HCG
- HAase
- HEXD
- HCV
- HEXA
- HEXB
- HPSE
- HPPD
- HPD
- HDLR
- HECTD1
- HMOX
- HMOX1
- Hydroxylase
- HSP
- HMGCS
- HRAS
- HIF-PH
- HARS
- Histamine receptor
- HRH1
- HRH2
- HRH3
- HMT
- HRH4
- HKMT
- HGFA
- HDAC1
- HDAC2
- HDAC3
- HDAC4
- Hedgehog protein
- HDAC5
- HDAC6
- HDAC7
- HDAC8
- HDAC9
- HDAC10
- HDAC11
- HOS2
- Heterotrimeric G-protein
- HDC
- HSPBP
- HCP
- HNF4A
- HHLA2
- HPGD
- HS6ST
- HMG
- HAL
- HA
- HPRT1
- Hemoglobin
- HPGDS
- Hemoglobin synthesis
- HPCL2
- HMGCR
- HIF
- HIF-1
- HBHA
- HU-1
- HIF-2
- HINT1
- HNRNPA2B1
- HK2
- HK
- HEXIM1
- HPPK
- HCF
- HCN
- HCN1
- HCN2
- HNF4
- HDAC
- HES
- H19
- HMMR
- Histatin
- Heparinase
- HCRT
- HNF4R