- h ... Haardt Mountains
- Haaretz ... Håblose slaegter
- haboku ... Hadda Padda
- Haddad ... Hadza
- Hadza language ... hag ha-sukkot
- hag moth ... Hahn, Otto
- Hahn, Reynaldo ... hair dressing
- hair feather ... Ḥakam II, al-
- hakama ... Haldane, Duncan
- Haldane, Elizabeth Sanderson ... Half-Life
- Half-light: Collected Poems 1965–2016 ... Hall generator
- Hall in Tirol ... Halle, Morris
- Hallé, Sir Charles ... halogen element
- halogen lamp ... Hamartolos, Georgios
- hamartoma ... Hamilton
- Hamilton ... Hamlet: A Monologue
- Hamlet: Poem Unlimited ... Ḥammūdid dynasty
- Hammurabi ... Han’en
- Han’gŭl ... handball
- handball ... Hang-chou
- Hanga Roa ... Hannah Arendt
- Hannah Arendt Institute of Artivism ... Hansen, Emile Christian
- Hansen, Gerhard Henrik Armauer ... Happe-Chair
- Happening ... Ḥarakat al-Jihād al-Islāmī fī Filasṭīn
- Ḥarakat al-Muqāwamah al-Islāmiyyah ... hard pine
- hard porcelain ... Harding, Warren Gamaliel
- Hardinge of Lahore and Kings Newton, Henry Hardinge, 1st Viscount ... Hargreaves, James
- Hargreaves, Roger ... Harlem Renaissance
- Harlem River Drive ... Harmsworth Cup
- Harmsworth Trophy ... Harran
- Harran, Battle of ... Harris, Renatus
- Harris, René ... Harry Potter and the Order of the Phoenix
- Harry Potter and the Philosopher’s Stone ... Hartlib, Samuel
- Hartline, Haldan Keffer ... harvester ant
- Harvester case ... hash sign
- hash table ... Hastings
- Hastings ... hatpin
- hatpin urchin ... Hauptmann von Köpenick, Der
- Hauptmann, Bruno ... Havana Charter
- Havana Company ... hawala
- Ḥawālī, Safār al- ... Hawley, Amos
- Hawley, Elizabeth ... Hayden, Carla
- Hayden, Carla Diane ... haystack hill
- Haystack Observatory ... HBOT
- HBV ... head-direction cell
- head-mounted display ... healthy life expectancy
- Healy v. James ... Heart’s Invisible Furies, The
- Heart’s Needle ... heath
- heath banksia ... Heavysege, Charles
- heavyweight ... Hecuba
- Hecyra ... Heezen, Bruce C.
- Hefei ... Heiles, Carl
- Heilig, Morton ... Heisenberg uncertainty principle
- Heisenberg, Werner ... Heliamphora
- Heliand ... Hell Has No Limits
- Hell in a Handbag ... Hello, Privilege. It’s Me, Chelsea
- HELLP syndrome ... Helsingin Sanomat
- Helsingør ... Hemidactyliinae
- Hemidactylus mabouia ... hemolytic transfusion reaction
- hemolytic uremic syndrome ... Hendricks, Thomas A(ndrews)
- Hendricks, Thomas Andrews ... Henrique de Carvalho
- Henrique o Cardeal-Rei ... Henry the Elder
- Henry the Fat ... Hentiyn Nuruu
- Hentz, Caroline Lee ... Heqat
- Heqet ... Herbert of Bosham
- Herbert of Castile Island, Baron ... Here Comes the Sun
- Héré de Corny, Emmanuel ... Herkimer, Nicholas
- Herland ... Hernandarias
- Hernández Colón, Rafael ... heroic tragedy
- heroic verse ... Herrmann, Wilhelm
- Herrn Eugen Dührings Umwälzung der Wissenschaft ... Herzberg, Gerhard
- Herzegovina ... hetaira
- hetairoi ... Heterospathe
- heterospecific brood parasitism ... Hewson, John
- Hewson, Paul David ... Hf
- HF OTH radar ... Hicks, Bill
- Hicks, David ... hierarchy
- hierarchy control ... High Court
- High Court ... high vowel
- High Wall ... Higher Ground
- Higher Himalayas ... Ḥijāzī, Salāmah
- hijāʾ ... Hill painting
- Hill reaction ... Hillis, Danny
- Hillis, William Daniel, Jr. ... Himmerland
- Himmler, Heinrich ... Hinn Island
- Hinn, Benny ... Hippolyta
- Hippolyte ... Hirscher, Marcel
- Hirschfeld, Al ... Histadrut
- histamine ... Historia Apologética
- Historia arcana ... Historical Inevitability
- historical injustice ... History of Israelite Religion from its Beginnings to the End of the Second Temple
- History of Italian Literature ... History of the Reformation in Europe at the Time of Calvin
- History of the Reformation of the Sixteenth Century ... Hitman’s Wife’s Bodyguard, The
- Hitman, the ... HNC
- Hnizdovsky, Jacques ... Hobbes, Thomas
- Hobbit, The ... Hodgins, Jack
- Hodgkin disease ... Hoffmann, Max
- Hoffmann, Melchior ... hôhe minne
- Hohe Tauern ... Holcomb
- Holcomb, Steven ... Holland, John Henry
- Holland, John Philip ... Hollywood or Bust
- Hollywood Park ... Holothuroidea
- Holothyrina ... Holy Maid of Kent
- Holy Mosque ... Home
- Home ... homeothermy
- homeotic gene ... Homo rhodesiensis
- Homo rudolfensis ... Homs
- Homs, Al- ... honeycreeper
- honeydew ... Honolulu International Airport
- Honolulu International Center ... Hooghly River Cyclone of 1737
- Hooghly-Chinsurah ... hop, step, and jump
- hop-hornbeam ... Hopper, DeWolf
- Hopper, Edward ... horizontal mobility
- horizontal power sharing ... Horne, Lena
- Horne, Lena Calhoun ... Hors de prix
- Horsa ... Hortensius Hortalus, Quintus
- Hortensius, Lucius ... host
- host computer ... Hotaka-dake
- Hotaki ... Hou Tu Nainai
- Hou Xiaoxian ... House I Live In, The
- House in Antigua, The ... Housefull 3
- Housefull 4 ... Ḥovevei Ẕiyyon
- Hovey, Richard ... How Do Deserts Form?
- How Do Earthquakes Occur? ... How housing inflation is measured: Prices, rent, and construction costs
- How I Found Livingstone ... How Pleasant to Know Mr. Lear
- How Quincy Jones owned the 1980s ... How to use the retirement bucket strategy to protect your nest egg
- How to use the student loan interest deduction and claim education tax credits ... Howard, Roy Wilson
- Howard, Shemp ... Hoyle, Edmond
- Hoyle, Sir Fred ... Hsia Yen
- Hsia-men ... hu
- Hu ... Huang Ch’ao
- Huang Ch’un-ming ... ḥubb ʿudhrī
- Hubba ... Hudson, Jennifer
- Hudson, Jennifer Kate ... Hughenden Manor
- Hughenden of Hughenden, Benjamin Disraeli, Viscount ... Huidobro Fernández, Vicente García
- Huidobro, Vicente ... Hulton, Sir Edward George Warris
- Hulu ... human race
- human relations ... Humboldt University of Berlin
- Humboldt’s Gift ... Humphreys, Joshua
- Humphreys, Mount ... Hungarian Gates
- Hungarian language ... Hunt, Nelson Bunker
- Hunt, Peter R. ... Huntley, Lydia Howard
- Huntley-Brinkley Report, The ... Hurrian religion
- Hurricane ... Husky, Siberian
- Hüsn ü Aşk ... Hutton, Betty
- Hutton, Brian G. ... hyacinth
- hyacinth ... Hyde, Sir Nicholas
- Hyde, Thomas ... hydrobiotite
- hydroboration ... hydrolysis
- hydrolyzable tannin ... hydroxymethoxybenzaldehyde
- hydroxynaphthalene ... hymenopteran
- Hymenostomatida ... hypercube
- hypercube ... hypertrophic spondylitis
- hypertrophy ... hyponatremia
- hypoosmotic pressure ... hysterectomy
- hysteresis ... H̱ula Valley
