| Hartia sinensis | Hartia sinii | Hartia tonkinensis |
| Hartia villosa | Hartia yunnanensis | Hartkirchen |
| Hartl | Hartley oscillator | Hartley振盪器 |
| Hartley振荡器 | Hartly, Delaware | Hartman, Colorado |
| Hartree | Hartree-Fock | Hartree-Fock方程 |
| Hartselle, Alabama | Hartsville, South Carolina | Hartswood Films |
| Harttia carvalhoi | Harttia depressa | Harttia dissidens |
| Harttia duriventris | Harttia fluminensis | Harttia fowleri |
| Harttia garavelloi | Harttia gracilis | Harttia guianensis |
| Harttia kronei | Harttia leiopleura | Harttia longipinna |
| Harttia loricariformis | Harttia merevari | Harttia novalimensis |
| Harttia rhombocephala | Harttia surinamensis | Harttia torrenticola |
| Harttia trombetensis | Harttia tuna | Harttia uatumensis |
| Harttiella crassicauda | Harttiella intermedia | Harttiella janmoli |
| Harttiella longicauda | Harttiella lucifer | Harttiella pilosa |
| Hartville, Wyoming | Haruehun Airry | HARUKA與MIYUKI |
| Harukarisk*Land | HARUKAZE | Haruki |
| Haruki Murakami | Harun al-Rashid | Harvard |
| Harvard Business Review | Harvard College | Harvard Law Review |
| Harvard Mark I | Harvard Revised catalogue | Harvard School of Medicine |
| Harvard university | Harvard University | Harvard University Press |
| Harvard-Kyoto | Harvard-Kyoto轉寫 | Harvest |
| Harvest Moon | Harvest-inc | Harvest唱片 |
| HARVEST出版 | Harvest出版公司 | Harvey Bernard Milk |
| Harvey Cushing | Harvey J. Alter | Harvey James Alter |
| Harvey Keitel | Harvey Milk | Harvey Nichols |
| Harvey Weinstein | Harvey Weinstein sexual abuse allegations | Harvey Williams Cushing |
| Harvey, North Dakota | Harveyope | Harwood, North Dakota |
| Hasan Turkmani | Hasarina contortospinosa | Hasarius adansoni |
| Hasarius albocircumdatus | Hasbro | Hasbro Studios |
| Haselsdorf-Tobelbad | Hasemania nana | Hash |
| Hash table | Hash函数 | Hashbang |
| Hashim Thaçi | Hashtag | Hashtag TWICE |
| Haskell | Haskell Curry | Haskell程式語言 |
| Haskell语言 | Haslach an der Mühl | Haslau bei Birkfeld |
| Haslau-Maria Ellend | Hasora | Hasora anura |
| Hasora badra | Hasora chromus | Hasora taminatus |
| Hassan al-Banna | Hassan Rouhani | Hassar affinis |
| Hassar gabiru | Hassar orestis | Hassar wilderi |
| Hassium | Hasslö | Hassler Whitney |
| HAST | Hasta Siempre | Hastings, Florida |
| Hastula albula | Hastula hectica | Hastula rufopunctata |
| Hastula strigilata | Haswell | Haswell, Colorado |
| Haswell微架構 | HAt | Hat Yai |
| HAT-P-1 | HAT-P-11 | HAT-P-11b |
| HAT-P-12b | HAT-P-13 | HAT-P-13b |
| HAT-P-13c | HAT-P-1b | HAT-P-2 |
| HAT-P-2b | HAT-P-3 | HAT-P-32 b |
| HAT-P-32b | HAT-P-3b | HAT-P-4 |
| HAT-P-4b | HAT-P-5 | HAT-P-5b |
| HAT-P-6 | HAT-P-6b | HAT-P-7 |
| HAT-P-7b | HAT-P-8 | HAT-P-8b |
| HAT-P-9 | HAT-P-9b | Hatcheria macraei |
| Hatena | Hath | Hatla massacre |
| Hato Popoko | Hatting | Hatton, North Dakota |
| Hattrick | HATTRICK online game | Hatun Sürücü |
| Hatzegopteryx | Hatzendorf | Haughton, Louisiana |
| Haugschlag | Haugsdorf | Haunoldstein |
| Haus | Haus of Gaga | Hausbrunn |
| Hausdorff | Hausdorff空间 | Hauskirchen |
| Hausleiten | Hausmannstätten | Haustellum haustellum |
| Hautus引理 | Hava Nagila | Havaianas |
| Havana, Florida | Havana, North Dakota | Havas |
| Have a Nice Day | Have You Seen Your Mother, Baby, Standing in the Shadow? | Havel定理 |
| Havel–Hakimi定理 | Havel–Hakimi算法 | Havel算法 |
| Havelockia versicolor | Haven | Haverhill, Florida |
| Havok | Havok (公司) | Havok引擎 |
| Haw | Hawai'i Department of Education | Hawaii |
| Hawaii Department of Education | Hawaii DOE | Hawaii Five-0 |
| Hawaii Five-O | Hawaii Pacific University | Hawaiian Gardens, California |
| Hawk Ostby | Hawking | Hawkman (Katar Hol) |
| Haworthia | Hawthorne, California | Hawthorne, Florida |
| HAWX | HAWX2 | Haxe |
| HaXe | Haxtun, Colorado | Haya |
| HAYA乐团 | Hayashi重排反应 | Hayata |
| Hayataella | Hayden Christensen | Hayden Panettiere |
| Hayden, Alabama | Hayden, Colorado | Hayek |
| HAYIM (协会) | Hayko Cepkin | Hayley |
| Hayley Atwell | Hayley Kiyoko | Hayley Westenra |
| Hayley Williams | Haynes, North Dakota | Haynesville, Louisiana |
| Hayneville, Alabama | Hayti, South Dakota | Hayward |
| Hazard Ratio | Hazel, South Dakota | Hazelton, North Dakota |
| Hazen, North Dakota | Hazeus otakii | HAZID |
| HAZOP | Hazy | H型引擎 |
| H型蒸汽机车 | H型鋼 | H區塊 |
| H區元素 | H參數 | H參數矩陣 |
| H參數等效模型 | H參數模型 | H参数 |
| H参数微变等效电路 | H参数矩阵 | H参数模型 |
| Häagen Dazs | Häagen-Dazs | Häselgehr |
| Hässleholm | Häxan: Witchcraft Through the Ages | H大道車站 (BMT布萊頓線) |
| Héctor Elizondo | Hélène Rollès | Hélder Postiga |
| H定理 | Hók-ciŭ-uâ | H³M |
| Hô-ló人 | Hôpital Chinois de Montréal | Hôtel Bitault de la Raimberdière |
| Höchst | Höf-Präbach | Höfen |
| Höflein | Höflein an der Hohen Wand | Höhnhart |
| Hölder不等式 | Hölder空间 | Hörbich |
| Hörsching | H·A·巴羅斯·布達勞 | H·律敦治 |
| H·保罗·德拉罗什 | H·凱·赫奇 | H·B·耶辛 |
| H·C·安徒生 | H·罗伯特·霍维茨 | H·羅伯特·霍維茨 |
| H·G·威尔斯 | H·H·阿斯奎斯 | H·J·馬勒 |
