- H ... Haarlem Mannerists
- Haarlem school ... Habré, Hissène
- Habrobracon ... Ḥaddād, Nuhād al-
- Haddāwah ... Haedo Hills
- Haedo Range ... Hagano
- Hagar ... Hai Duong
- Hái Falls ... hairball
- haircloth ... Haken, Wolfgang
- Hakhamanish ... Haldefjäll
- Haldeman, Bob ... half-wave rectifier
- Half-Way Covenant ... Hall, Asaph
- Hall, Basil ... Haller, Albrecht von
- Haller, Bertold ... Halpa-Runtiyas
- Halper, Albert ... Hamburg Hall of the Arts
- Hamburg National Theatre ... Hamilton, Bethany Meilani
- Hamilton, Donald ... Hammarskjöld, Dag Hjalmar Agne Carl
- Hammarskjöld, Hjalmar ... Hampton Normal and Agricultural Institute
- Hampton Roads ... Hanauer, Lee Edward
- Hanauma Bay ... handicraft
- Handie-Talkie ... Hanguk
- Hangul ... Hanover
- Hanover ... Hanyang
- Hanye zhong de xingchen ... haptene
- hapto nomenclature ... Harburg, Edgar Yipsel
- Harcourt, Bernard ... Harder They Fall, The
- Harder They Fall, The ... hare-lipped bat
- harebell ... Harlem
- Harlem ... Harmonist Society
- Harmonists ... Harpur, Charles
- Harpy ... Harris, Naomie
- Harris, Neil Patrick ... Harry Potter and the Sorcerer’s Stone
- Harry Potter and the Sorcerer’s Stone ... Hartmanis, Juris Varlejs
- Hartmann von Aue ... Harvey
- Harvey ... Hāshimite
- Hāshimīyah ... Hastings, Lady Flora
- Hastings, Michael ... Hatter’s Castle
- Hatteras Abyssal Plain ... Hausa Bakwai
- Hausa language ... Havelange, João
- Havell, E. B. ... hawk
- Hawk ... Hawthorne, Nigel
- Hawthorne, Rose ... Hayes, Bullet Bob
- Hayes, Denis ... Hazael
- ḥazan ... He 178
- He 70 ... Headstone Manor
- headwall ... Hearst, Patty
- Hearst, William Randolph ... heat content
- heat cramps ... Heavenly Deaf One
- Heavenly Purity, Palace of ... Hecate
- Hecate Strait ... Hedwig and the Angry Inch
- Hedwig glass ... Heidi
- Heidi ... Heinrich, Martin
- Heinrich, Martin Trevor ... Helena
- Helena ... Helium
- helium ... Hellgate Village
- hellgrammite ... Help Me Make It Through the Night
- Help! ... Hemerocampa leucostigma
- Hemery, David ... hemoglobin D
- hemoglobin E ... Henderson, Mary
- Henderson, Richard ... Henri, Florence
- Henri, Robert ... Henry of Trastámara
- Henry of Valois ... Henson, James Maury
- Henson, Jim ... Heptastadion
- Heptateuch ... Herber, Lewis
- Herberg, Evelin ... Here Comes the Boom
- Here Comes the Bride ... Herlen
- herm ... Hernandez del Castillo, Ana
- Hernández Martínez, Maximiliano ... Heroica Zitácuaro
- Heroides ... Herrold, Charles
- Herron, Helen ... Herzl, Mount
- Herzl, Theodor ... Hetepsekhemwy
- Heteralocha acutirostris ... Heterostraci
- heterostructure ... hexachloroplatinic acid
- hexachord ... HFPA
- Hfr cell ... Hicks, William Melvin
- Hicksite ... hieroglyphics
- Hieroi Logoi ... High Fidelity
- High Fidelity ... high-early-strength portland cement
- high-efficiency particulate air system ... highland doghobble
- Highland dress ... Hilāl, al-
- Hilāl, Banū ... Hill, Julia Lorraine
- Hill, Lauryn ... Hilton, Conrad
- Hilton, Conrad Nicholson ... Hindi literature
- Hindiyyah Barrage ... Hipparchos
- Hipparchus ... Hiranyaksha
- Hiraoka Kimitake ... Hisar
- Hisarlık ... Histoire des empereurs
- Histoire des Girondins ... Historiae
- Historiae ... History of Art Criticism
- History of Botany 1530-1860 ... History of the Conspiracy of Pontiac
- History of the Corruptions of Christianity ... Hitchcock, Albert Spear
- Hitchcock, Alfred ... HLW
- HM.2 ... hoary plantain
- hoary whitlow grass ... hocquet
- Hocus Pocus ... Hoffman, Philip Seymour
- Hoffman, Reid ... Hoglin’s Town
- Hogmanay ... Holbach, Paul-Henri Dietrich, baron d’
- Holbæk ... Holland
- holland ... Hollywood Cavalcade
- Hollywood Ending ... holotype
- Holowczyn, Battle of ... Holy Mother, The
- Holy Mountain ... Home Alone
- Home Alone 2: Lost in New York ... Homerian Stage
- Homeric epics ... homoeomerous thallus
- homoeopathy ... Honchō hennen-roku
- Honchō tsugan ... Honfleur
- hong ... honorific
- Honorius ... Hooke, Robert
- Hookean solid ... Hope, Leslie Townes
- Hope, Lugenia Burns ... Horae Syriacae
- Horae, The ... Hormozgān
- Hormuz ... Horniman, Annie
- Horniman, Annie Elizabeth Fredericka ... horse-riding
- horse-sacrifice ceremony ... Hosea
- Hosea ... Hot in Cleveland
- hot isostatic pressing ... Hôtel-Dieu du Précieux Sang
- Hotelier ... Houphouët-Boigny, Félix
- hour ... House on 92nd Street, The
- House on Coliseum Street, The ... Houston, Whitney
- housy-housy ... How to Marry a Millionaire
- How to Murder Your Wife ... Howe Hill
- Howe of Langar, Viscount ... Hrabal, Bohumír
- Hrabanus Magnentius ... Hsin Chiang
- Hsin dynasty ... Hua Kuo-feng
- Hua Ruoting ... Huang, Mount
- Huang-ch’ao ching-shih wen-pien ... Hubert Walter
- Hubert, Henri ... Huerteales
- Huesca ... Hughley, D. L.
- Hughson, John ... hula
- hula ‘auana ... human endogenous retrovirus
- human engineering ... Humanité, l’
- humanities ... hummingbird moth
- Hummingbird Project, The ... Hundred Rolls
- Hundred Schools ... Hunsrück
- Hunsrückschiefer ... Hunting of the Snark, The
- Hunting of the Snark: An Agony in Eight Fits, The ... hurdle race
- hurdling ... Husband’s Message, The
- Husband, Herman ... Hutchinsoniella macracantha
- Hutchison Whampoa ... Hwang, David Henry
- Hwange ... Hyde Park on Hudson
- Hyde, Charles Cheney ... hydriding process
- Hydrilla ... Hydroida
- Hydroides ... hydroxybenzene
- β-hydroxybutyraldehyde ... Hymenaea
- Hymenaeus ... Hyperbolus
- Hyperborean ... hypertime
- hypertragulid ... Hypolydian mode
- hypomagnesemia ... Hystaspes
- Hysterangiales ... H̱ula Valley