Fabio Luiz Haag Isidore Haiblum Jack C. Haldeman Joe Haldeman Edward Everett Hale Edmond Hamilton Peter F. Hamilton Elizabeth Hand Anton Hanna Charlotte Haptie Charles L. Harness Harry Harrison Ana Hatherly Willard Hawkins Nathaniel Hawthorne Lian Hearn Peter Heath Robert A. Heinlein Herberto Helder Hélia Nathalie Ch. Henneberg Frank Herbert Alexandre Herculano Philip E. High A. Higon Douglas Hill Walter Hill Edward D. Hoch E. T. A. Hoffmann James P. Hogan William Hope Hogdson Robert Holdstock Álvaro de Sousa Holstein Alexandre Honrado Arlindo Horta Shinichi Hoshi Jean Hougron P. A. Hourey Troy Howard Fred Hoyle Geoffrey Hoyle L. Ron Hubbard E. Mayne Hull Aldous Huxley