- h ... Haaretz
- Haarlem ... haboku
- Haboku-sansui ... Haddad
- Haddad, Fernando ... Hadziacz Agreement
- Haeberle, Ron ... Ḥag Shavuot
- Hag-Seed ... Hahn-Hahn, Ida, Countess von
- Hahnemann, Christian Friedrich Samuel ... hair dressing
- hair feather ... Ḥakam II, al-
- hakama ... Haldane, Duncan
- Haldane, Elizabeth Sanderson ... Half-Life
- Half-light: Collected Poems 1965–2016 ... Hall in Tirol
- Hall of Fame for Great Americans ... Hallé, Sir Charles
- Halle, University of ... halogen lamp
- halogen oxide ... hamartoma
- Ḥamās ... Hamilton
- Hamilton ... Hamlin, Hannibal
- Hamline University ... Hammurapi
- Hamon, Pierre ... Han-gang
- Han-jen ... Handbook of Nature Study
- Handbook of Physiological Optics ... Hangawi
- Hangayn Mountains ... Hannah, John Allen
- Hannah-Jones, Nikole ... Hansen, William Webster
- Hanseong ... Happiness, Sea of
- Happy ... Harald IV
- Harald the Ruthless ... hard-boiled fiction
- hard-chromium plating ... hardun
- Hardwar ... Haring, Keith
- Haringey ... Harlot’s Progress, A
- Harlot’s Progress, The ... haroucha
- harp ... Harrington farthing
- Harrington, Baron ... Harrison, Earl G.
- Harrison, Elizabeth ... Hart, Charles
- Hart, Charley ... Hartshorne, Richard
- Hartsock, Nancy ... Harvey, William
- Harwich ... Haskin, Byron
- Haskins, Charles Homer ... Hat Yai
- Hat, The ... ḥatuna
- haty ... Hausmann, Raoul
- hausmannite ... Haviland Crater
- Haviland ware ... Hawke, Bob
- Hawke, Edward Hawke, 1st Baron ... Hay
- hay bacillus ... Hayes, James
- Hayes, John ... Ḥazārajāt
- Hazard ... He II
- He Jingzhi ... Headstone Manor
- headwall ... Hearst Castle
- Hearst Communications ... heat
- heat ... Heaven Makers, The
- Heaven’s Gate ... Hebrew University Medical Center
- Hebrew University of Jerusalem ... hedonic approach
- hedonic calculus ... Heiberg, Johanne Luise
- Heiberg, Peter Andreas ... Heinkel He 178
- Heinkel, Ernst Heinrich ... Held, David
- Held, John, Jr. ... heliogravure process
- heliometer ... Hellenic War
- Hellenica ... Helmont, Jan Baptista van
- Helmont, Joannes Baptista van ... Hemachatus haemachatus
- Hemachatus nyangensis ... hemispherectomy
- hemispheric dominance ... hen fish
- hen harrier ... Hennell, Charles
- Hennepin, Louis ... Henry III
- Henry III ... Henry, Hubert Joseph
- Henry, Jodie ... hepatocellular carcinoma
- hepatocellular hepatitis ... Herakles
- Hēraklēs mainomenos ... Hercules
- Hercules ... Hérémakhonon
- Herend ... Hermes
- Hermes ... Hero’s Life, A
- Hero, A ... Herrenvolk
- Herrera Campíns, Luis ... Hertspiegel
- Hertwig, Oskar ... Hesperus
- Hess ... Hétérogénie
- heterogloss ... Heuneburg
- Heureaux, Ulises ... hexosamine-collagen ratio
- hexosaminidase A ... Hiberno-Saxon style
- Hiberus River ... hide
- hide ... Higginson, Thomas Wentworth
- Higginson, Thomas Wentworth Storrow ... High Point
- High Point University ... high-solids–high-acid principle
- high-speed antiradiation missile ... Highway Revenue Act
- Highway to Heaven ... Hildebrand, Joel H.
- Hildebrandslied ... Hillary, Sir Edmund Percival
- Hillary: The Movie ... Himalayan goral
- Himalayan Impeyan ... Hindustan
- Hindustan Republican Association ... Hippius, Zinaida Nikolayevna
- Hippo ... Hiroa, Te Rangi
- Hirohito ... Ḥismā Plateau
- Ḥiṣn al-Ghurāb ... Histoire du siècle d’Alexandre le Grand
- Histoire du soldat ... Historiarum ab inclinatione Romanorum imperii decades
- Historiarum adversus paganos libri VII ... History of Danish Dreams, The
- History of Dogma, The ... History of the Former Han Dynasty, The
- History of the Franks, The ... Hitchens, Christopher Eric
- Hitchhiker’s Guide to the Galaxy, The ... HMD
- HMDA ... hoatzin
- hoax ... Hocus Pocus
- Hocus Pocus ... Hoffman, Julius
- Hoffman, Malvina ... Hogg, Douglas McGarel, 1st Viscount Hailsham of Hailsham
- Hogg, James ... Holan, Vladimír
- Holand, Thomas de ... holism
- holistic medicine ... Holly, Buddy
- Hollý, Ján ... Holon
- Holonyak, Nick, Jr. ... Holy Fire
- holy fool ... Homalozoa
- Homaridae ... homelessness
- Homelessness ... HOMO
- Homo ... Homosexuals in America, The
- homosphere ... honey stomach
- honey tree ... Honkeiko colliery mining disaster
- Honky Tonk ... hoof-and-mouth disease
- hoofed mammal ... Hoover, Lou
- Hoover, Tad ... Hoppe, William Frederick
- Hoppe, Willie ... horizontal financial equalization
- horizontal gene transfer ... Horne Islands
- Horne, Filips van Montmorency, count van ... Horror of Dracula
- horror story ... Hortensia
- Hortensia, Lex ... Hossō
- host ... hot-wire anemometer
- hot-working ... Hou T’u
- Hou Tang dynasty ... House for Mr. Biswas, A
- house geranium ... household
- household appliance ... Hovhaness, Alan
- Hovhannes IV Otznetzi ... How to Dismantle an Atomic Bomb
- How to Do Things with Words ... Howard, Richard
- Howard, Robert E. ... Hoya carnosa
- Hoydal, Karsten ... Hsi-sha Ch’ün-tao
- Hsi-tsang Tzu-chih-ch’ü ... HTV
- HTV silicone rubber ... Huancayo
- Huang Binhong ... ḥubb ʿudhrī
- Hubba ... Hudson, Jennifer
- Hudson, Jennifer Kate ... Hughenden Manor
- Hughenden of Hughenden, Benjamin Disraeli, Viscount ... Huiguo
- Huila ... Hulun
- Hulun Hu ... Human Rights Act 1998
- Human Rights and Biomedicine, Convention on ... Humboldt, Mount
- Humboldt, Wilhelm von ... Humphries, Barry
- Humphries, John Barry ... Hungarian National Bank
- Hungarian National Council ... Hunt, Thornton Leigh
- Hunt, Tim ... Huntsman: Winter’s War, The
- Huntsville ... hurricane lantern
- Hurricane, The ... Ḥussein ibn Ṭalāl
- Hussein Onn ... Huxley, Sir Andrew Fielding
- Huxley, Sir Julian ... Hyaenodontidae
- Hyakuren ... Hydraenidae
- hydralazine ... hydrocodone
- hydrocooling ... Hydromys chrysogaster
- hydronephrosis ... Hyeniaceae
- Hyeniales ... Hymnes
- Hymnes and Songs of the Church, The ... Hyperides
- hyperidrosis ... hypho-borane
- hypho-carborane ... Hyporthodus nigritus
- hyposensitization ... Hystricomorpha
- Hystrix ... H̱ula Valley
