- H ... Haarde, Geir H.
- Haardt Mountains ... habitus
- Hable con ella ... ḥadd
- Ḥadd, Al- ... hadrosaur
- Hadrosauridae ... Haftaroth
- hafting ... Haguenau
- Hahn, Archie ... Hainisch, Michael
- Hainuwele ... Ḥajjāj, al-
- Ḥājjī Bektāsh Walī ... halberd
- halberd fern family ... half rhyme
- half volley ... Haliotis
- Haliotis rufescens ... Halladay, Daniel
- Halladay, Doc ... Halma
- Halmahera ... hamadryad
- hamadryas ... Hamerling, Robert
- Hamersley Basin ... Hamiltonian function
- Hamina, Treaty of ... Hammett, Samuel Dashiell
- Hammid, Alexander ... Han Fei-tzu
- Han Feizi ... Hand of Ethelberta, The
- Hand of Fatima ... handsaw
- handsome fungus beetle ... Hanks, Nancy
- Hanks, Nancy ... Hans Nads, testamente
- Hans of Iceland ... Hap
- Hapalemur ... haptene
- haptic technology ... harbour seal
- Harbour, David ... Hardenberg und die Geschichte des preussischen Staates von 1793 bis 1813
- Hardenberg, Friedrich Leopold, Baron von ... hare and hounds
- Hare Krishna ... Harjo, Sterlin
- Harjo, Suzan Shown ... harmonic analyzer
- harmonic construction ... Harper’s Magazine
- Harper’s New Monthly Magazine ... Harris, David
- Harris, E. Lynn ... Harrod, Sir Roy
- Harrod-Domar equation ... Hart-Rudman Commission
- Hart-Rudman Task Force on Homeland Security ... haruspicy
- Hārūt and Mārūt ... Ḥasan ibn Muḥammad al-Wazzān al-Zayyātī, al-
- Ḥasan ibn ʿAlī ibn Abī Ṭālib ... Hassan, Mohammed Abdullah
- Hassan, Muhammad Farah ... hatchment
- hate crime ... Hauff, Wilhelm
- Haug, Émile ... haute école
- Haute-Garonne ... Havre, Le
- Havre-de-Grâce ... Hawkeye
- Hawkeye State ... Hay, Sir Gilbert
- Hay, Timothy ... Haykal, Muḥammad Ḥusayn
- Hayley, William ... Hazari, al-
- Hazaribag ... He-Man and She-Ra: The Secret of the Sword
- He-Man and the Masters of the Universe ... Healesville Sanctuary
- Healey, Denis Winston, Baron Healey of Riddlesden ... heart and lung transplant
- Heart and Soul ... heat balance
- heat bleaching ... Heaven, Kingdom of
- Heaven, Mandate of ... Hebriden, Die
- Hebrides ... hedonic calculus
- hedonism ... Heiberg, Johan Ludvig
- Heiberg, Johanne Luise ... Heinesen, William
- Heinicke, Samuel ... Held des Nordens, Der
- Held in Bondage ... Heliogabalus
- heliograph ... Hellene
- Hellenic Alliance ... Helminthostachys zeylanica
- Helmold Of Bosau ... Hélyot, Hippolyte
- Hélyot, Pierre ... Hemiscylliidae
- HemisFair Park ... Hemsworth, Christopher
- Hemū ... Henley, William Ernest
- Henley-on-Thames ... Henry II
- Henry II ... Henry’s law
- Henry, Alice ... hepatitis D virus
- hepatitis E ... Heraclius
- Heraclius Constantine ... Herbstreise durch Skandinavien
- herceg ... hereditary nonpolyposis colorectal cancer
- hereditary spherocytosis ... Hermannsdenkmal
- Hermannskogel ... hernia
- herniated disk ... herpes simplex virus type 2
- herpes zoster ... Hershey Foods Corporation
- Hershey, A.D. ... Hesher
- Ḥeshvan ... Heterodontus francisci
- Heterodontus mexicanus ... Hétköznapok
- hetman ... Hexamita meleagridis
- Hexanchidae ... hi-hat
- Hi-Lo Country, The ... Hidalgo, Anne
- Hidatsa ... hierophantes
- hierophany ... High German language
- High God ... high-early-strength portland cement
- high-efficiency particulate air system ... Highland Clearances
- highland climate ... ḥikmah
- Hikmah, Bayt al- ... Hill, Dusty
- Hill, Faith ... Hillsborough
- Hillsborough ... Hincmar of Reims
- hind ... Hinthada
- Hinton ... Hippopotamidae
- hippopotamus ... Hirt, Hermann
- Hirt, Hermann Alfred ... histogram
- Histoire ancienne de l’église chrétienne ... Historia del famoso predicador Fray Gerundio de Campazas, alias Zotes
- Historia delle guerre civili di Francia ... Historical Sketches
- historical synthesis ... History of Mexico, The
- History of Mount Allison ... History of the United States
- History of the United States ... Hittite
- Hittite hieroglyphic writing ... Ho Chi Minh
- Ho Chi Minh City ... Hobbs
- Hobbs, Alfred Charles ... Hodgkinson, Eaton
- Hodgman, Eleanor ... Hofkirche
- Hofmann degradation ... Hohenlohe Family
- Hohenlohe-Ingelfingen, Friedrich Ludwig, Fürst zu ... Hold Back the Dawn
- Hold Everything ... Holland, Sir Erskine
- Holland, Sir Sidney ... Hollywood Ten
- Hollywood Town Hall ... Holowczyn, Battle of
- Holroyd, Michael ... Holy Mother Shri Sarada Devi
- Holy Mother, The ... Home
- Home ... homeostasis
- homeothermy ... Homo naledi
- Homo neanderthalensis ... homozygous beta-thalassemia
- hompa-shiki ... Honeycomb, The
- honeycreeper ... Honolulu Harbor
- Honolulu International Airport ... Hooghly River
- Hooghly River Cyclone of 1737 ... hop tree
- Hop, Hendrik ... Hopper, Dennis
- Hopper, Dennis Lee ... horizontal merger
- horizontal meridian circle telescope ... Horne, Îles de
- Horne, John ... Horry
- Horry, Robert ... hortensias, Las
- Hortensio ... Hosseini, Khaled
- Hossō ... hot-spot volcano
- hot-water heating ... Hou Liang dynasty
- Hou Liang Taizu ... house centipede
- House Committee on Finance ... House-Grey Memorandum
- house-mouse mite ... Hovedstrømninger i det 19de aarhundredes literatur
- Hovell, William ... How Did the Tradition of Christmas Trees Start?
- How Did the Tradition of Wedding Rings Start? ... How Fast Are Alligators?
- How Fast Are Cheetahs? ... How Many People Have Been to the Moon?
- How Many People Signed the U.S. Constitution? ... How to choose mutual funds that fit your goals
- How to create a budget for retirement: A financial plan for your newfound freedom ... Howard
- Howard Family ... Howe, Robert
- Howe, Samuel Gridley ... HRF
- Hringvegur ... Hsin-pei
- Hsin-tien ... Hua-lien
- Hua-lien ... Huang-ch’ao ching-shih wen-pien
- Huang-Huai-Hai Plain ... Huberman, Barbara Jane
- Hubert ... Hueneme
- Huernia ... Hughes, Richard
- Hughes, Robert ... Huizhou
- Huizhou ... human body
- human body systems ... Human Windmill, the
- Human, All-Too-Human ... humic matter
- humid continental climate ... Hunan cuisine
- Hunan language ... Hunger
- Hunger Games, The ... Hunter, Alberta
- Hunter, Catfish ... Hunza
- huo ... Hurry on Down
- Hurry Sundown ... Hussein, Qusay
- Hussein, Saddam ... Huxley, Hugh Esmor
- Huxley, Sir Andrew Fielding ... hyaenodont
- Hyaenodontidae ... Hydra
- Hydra ... Hydrochoerus
- Hydrochoerus hydrochaeris ... hydrometer
- Hydrometridae ... Hyemoschus
- Hyemoschus aquaticus ... hymn tune
- hymnal ... hyperhidrosis
- Hypericum ... Hyphaene
- Hyphaene compressa ... hypophysis cerebri
- hypopituitarism ... Hysterocarpus traski
- hysterosalpingography ... H̱orvot Meẕada
