| h. | hoch = high |
| H. | Hohe = height |
| ha. | Hectare; Hektar |
| HA | Hydrologic Atlas |
| HAC | Harbor and Approach Chart |
| HALS | Hawaii Assn. of Land Surveyors |
| HARN | High-Accuracy Reference Network (U.S.) |
| Hauptm. | Hauptmann = Captain |
| Hbf | Hauptbahnhof = main railway station |
| HBCA | Hudson Bay Company Archives |
| HBF | Herbert Bismarck Foster |
| HBM | Hydrologic bench mark |
| HBMN | Hydrologic Bench Mark Network |
| HC | Hard copy |
| HCC | Heat Capacity Mapping Mission |
| HCDN | Hydroclimate Data Network |
| HCMM | Heat-capacity Mapping Mission |
| HCMR | Heat-capacity Mapping Radiometer |
| HCRS | Heritage Conservation and Recreation Service (U.S.) |
| HD | Hydrographic Dept. (Great Britain) |
| HDDT | High-Density Digital Tape |
| HDLD | Headland |
| HDOP | Horizontal Dilution of Precision |
| HDT | High density tape |
| HDT-A | High density tape (not geometrically corrected) |
| HDTR | High density tape recorder |
| HDTV | High-definition television |
| Herst. | Herstellung |
| HE/S | Hardcopy Exploitation Segment |
| HF | High frequency |
| HFA | Hydrologic field assistant |
| Hfn | Hafen = port, harbor |
| Hgbf | Hauptgueterbahnhof |
| HGCSD | Harris-Galveston Coastal Subsidence District (U.S.) |
| .HGL | Newlett-Packard Graphics Language format |
| HGML | Hyper Graphic Markup Language |
| HGS | Halliburton Geophysical Services |
| HHG | Household goods (Rand McNally MileMaker) |
| HI | Hawaii |
| HIA | Hydrologic Investigations Atlas |
| HIF | Hydrologic Instrumentation Facility |
| Hind. | Hindustan |
| HIRAN | High Range Navigation |
| HIRS | High-resolution Infrared Sounder |
| HIS | Hydrologic Information System |
| HISS | Heritage Information Statistical System |
| HIT | Horizons Technolgy Inc. |
| HIU | Hydrologic Information Unit |
| HJW | Hammon, Jensen, Wallen & Associates; HJW GeoSpatial, Inc. |
| HKGA | Hong Kong Geographical Assn. |
| HLAB | Hessisches Landesamt fur Bodenforschung |
| HLfB | Hessisches Landesamt fur Bodenforschung |
| HLL | Hill |
| HLLS | Hills |
| HLR | High level radiation; High level radioactivity |
| HLRS | Highway Location Reference Standard |
| HLS | Hue, lightness and saturation |
| HLVA | Hessisches Landesvermessungsamt |
| HLW | High level waste (radioactivity) |
| HMCK | Hummock |
| HMGS | Hellenic Military Geographical Service |
| HMSO | Her/His Majesty's Stationery Office (Great Britain) |
| H.O. | Hochofen = blast furnace |
| HOM | Hotine oblique Mercator |
| Hon. | Honorable |
| Hp | Haltepunkt = stopping place |
| HP | Hewlett-Packard (corp.) |
| HPFS | High pressure fire service |
| HPGL | Hewlett Packard Graphics Language |
| HPGN | High-Precision Geodetic Network |
| HPP | High Precision Photogrammetry |
| HPRASA | High Plains Regional Aquifer System |
| HQ | Headquarters |
| HR | House of Representatives |
| HRB | Highway Research Board |
| HRD | High-resolution data |
| HRDB | High-resolution Data Base |
| HRDI | High-resolution Doppler Imager |
| HRFRS | High-resolution Film Recorder Subsystem |
| HRGA | High Rate Geographical Areas |
| HRIR | High-resolution Infrared Radiometer |
| HRMSI | High Resolution Multispectral Stereo Imager |
| HRV | High Resolution Visible |
| HRVIR | High Resolution Visible Infrared (scanner) |
| HS | High school |
| HSDL | High-bit-rate Digital Subscriber Line |
| HSGT | Hitachi Software Global Technology, Ltd. |
| HSI | Horizontal Situation Indicator; Habitat Suitability Index |
| H. St. | Eisenbahn Haltstelle = railway stop |
| HTC | Hydrographic Topographic Center (USDMA) |
| H., T.C. | Thomas Campanius Holm |
| HTDP | Horizontal Time-Dependent Positioning |
| HTI | Horizons Technology, Inc. |
| HTML | Hypertext (or HyperText) Markup Language |
| HUA | Hydrologic Unit Area |
| HUC | Hydrologic Unit Code |
| HUD | Dept. of Housing and Urban Development (U.S.) |
| Hund. | Hundred |
| H.W. | Hochwasser |
| H/W | Hardware |