- Aurelian Manta Roşie
- Haines, Richard F.
- Haisch, Bernard
- Hall, Richard H.
- Hall, Robert L.
- Hallet, Marc
- Halley, Edmund
- Halstead, Frank
- Hancock, Graham
- Harder, James A.
- Harris, Paola
- Hartmann, William K.
- Hassal, Peter
- Hastings, Robert
- Hatch, Larry
- Hauge, Bjørn Gitle
- Haut, Walter G.
- Hawking, Stephen
- Heard, Gerald
- Heidmann, Jean
- Heinonen, Aarno
- Hellyer, Paul
- Helm, Richard
- Helms, Richard
- Henderson, Garry C.
- Hendry, Allan
- Herschel, William
- Hess, Seymour
- Hewes, Hayden C.
- Hilbert, David
- Hill, Norton Peter John
- Hill, Paul R.
- Hillenkoetter, Roscoe Henry
- Hineman, Everett
- Hoagland, Richard C.
- Hobana, Ion
- Hogg, Arthur Robert
- Holbecq, Andre Jacques
- Hoover, John Edgar
- Hopkins, Budd
- Hopkins, Herbert
- Horowitz, Paul
- Hough, Peter
- Howard, Dana
- Hudson, Michael
- Hume, David
- Hunsaker, Jerome Clarke
- Hunt- Williamson, George
- Hutchinson, Bruce
- Huygens, Christiaan
- Hynek, Josef Allen
- Michel d'Obrenovic