| H I region ... Hachinohe |
| Hachioji ... Hafez |
| Hafiz Ibrahim, Muhammad ... Hai River |
| Hai San ... Halas, George |
| Halas, John; and Batchelor, Joy ... Halifax |
| Halifax ... Hallein |
| Hallel ... Hamadani, al- |
| Hamadhani, al- ... Hamilton, Emma, Lady |
| Hamilton, Gavin ... Hampden, John |
| Hampden, Walter ... Hancock, Winfield Scott |
| hand ... Hans Adam II, prince of Liechtenstein |
| Hansberry, Lorraine ... Harbour Grace |
| harbour seal ... Haribhadra |
| Haridwar ... Harnett, William |
| Harney Peak ... Harris, Sir Arthur Travers, 1st Baronet |
| Harris, Townsend ... Hartford, University of |
| Hartleben, Otto Erich ... Hasan |
| Hasan Abdal ... Hastings, Warren |
| Hastings, William Hastings, Baron ... Hauksbee, Francis, The Elder |
| Hauksbee, Francis, The Younger ... Hawaii, University of |
| Hawaiian ... Hayagriva |
| Hayakawa, S.I. ... Hazard, Paul |
| Hazaribag ... heartwood |
| heat ... Hecker, Isaac Thomas |
| Hecker, Johann Julius ... Heidelberg, University of |
| Heiden, Eric ... Helen |
| Helena ... helmet |
| helmet shell ... hemochromatosis |
| hemochromogen ... Henrietta Maria |
| Henriquez Urena, Pedro ... Henry, Alice |
| Henry, Cape ... Herbert, Edward Herbert, 1st Baron |
| Herbert, Frank ... Hermans, Willem Frederik |
| hermaphroditism ... heroic verse |
| Heroica Nogales ... Hertwig, Oskar |
| Hertwig, Richard von ... Hesychius Of Miletus |
| hetaera ... hiatus |
| Hiawatha ... High God |
| high jump ... Hilden |
| Hildesheim ... Himalayas |
| Himeji ... Hippo |
| Hippocrateaceae ... Hiss, Alger |
| Histadrut ... Ho Chi Minh Trail |
| Ho Hsien-ku ... Hodgkin disease |
| Hodgkin, Dorothy Mary Crowfoot ... Hofu |
| Hofzinser, Johann Nepomuk ... Holbein, Hans, the Younger |
| Holberg, Ludvig, Friherre Holberg ... Hollywood |
| Hollywood Ten ... Holy of Holies |
| holy order ... Homoean |
| homogeneous reaction ... honorific |
| Honorius ... Hoover Dam |
| Hoover, Herbert ... Hora |
| Horace ... Horniman, Annie |
| Hornindals Lake ... Horthy, Miklos |
| horticulture ... Houlton |
| Houma ... Howard, John |
| Howard, John Winston ... Hsi-ning |
| Hsia Dynasty ... Huaca Prieta |
| Huai River ... hubris |
| Huc, Evariste Regis ... Hughes, Charles Evans |
| Hughes, David ... human disease |
| human ecology ... Humpen glass |
| Humperdinck, Engelbert ... Hunt, Ward |
| Hunt, William Holman ... Hurley, Patrick J |
| hurling ... Hutten, Philipp von |
| Hutterite ... Hyde, Sir Nicholas |
| Hyder Ali ... hydrometeorology |
| hydrometer ... hypercatalexis |
| hyperfine structure ... hysteresis |
| hysteria ... |
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