| H Mart | supermarket chain | Lyndhurst | 1982 |
| H. J. Heinz Company | food manufacturer, commercial organization | Pittsburgh | 1869 |
| Hachette Book Group | book publisher, publishing house | New York City | 1837 |
| Hachette Books | book publisher, publishing house | New York City | 1990 |
| Haidilao | restaurant chain, business, company, public company | Century City, Chicago | March 20, 1994 |
| Halo Studios | video game developer | Redmond | 2009 |
| Hampshire College | liberal arts college, Colleges That Change Lives, private not-for-profit educational institution | — | 1965 |
| Handspring | business | Mountain View | June 1998 |
| Harcourt | publishing house | San Diego, New York City | 1919 |
| Hard Rock Hotel and Casino | skyscraper, casino, hotel, music venue | — | 1995 |
| Harley-Davidson | motorcycle manufacturer | Milwaukee | 1903 |
| Harman International Industries | business, enterprise, public company | Stamford | 1980 |
| Harper | publishing house, imprint | New York City | 1817 |
| Harris Corporation | former entity, business, public company | Melbourne | 1955 |
| Harry S. Truman Presidential Library and Museum | museum, library | — | 1957 |
| Harvard Graduate School of Design | graduate school, academic department | Cambridge | 1936 |
| Harvard University | colonial colleges, research university, private not-for-profit educational institution, private university | Cambridge | September 8, 1636 |
| Harvey Mudd College | private not-for-profit educational institution, liberal arts college in the United States | Claremont | 1955 |
| Hasbro | board game publishing company, business, enterprise, public company | Pawtucket | 1923 |
| Haskell Indian Nations University | American Indian boarding school, public educational institution of the United States, university, land-grant university, tribal colleges and universities | — | 1884 |
| HEAD | business, enterprise | Kennelbach | 1950 |
| Henry Holt and Company | book publisher, publishing house | New York City | 1866 |
| Herbalife | multi-level marketing company, public company | Cayman Islands, Los Angeles, California | February 1980 |
| Hercules Computer Technology | enterprise | California | 1982 |
| Herman Miller | business, public company | Zeeland | 1923 |
| Hewlett Packard Enterprise | computer manufacturer, software company, business, enterprise | Spring | November 1, 2015 |
| Hi-Rez Studios | video game developer | Alpharetta | 2005 |
| High Moon Studios | video game developer | San Diego | 2001 |
| Hill & Knowlton | public relations agency, business, enterprise | New York City | 1927 |
| Hilton Hotels & Resorts | hotel chain, organization | Texas | 1919 |
| Hofstra University | private not-for-profit educational institution, private university | — | 1935 |
| HOK | architectural firm | St. Louis | 1955 |
| Holland America Line | business, enterprise, cruise line | Seattle | 1873 |
| Hollywood Roosevelt Hotel | hotel | — | 1927 |
| Honda Aircraft Company | aerospace manufacturer | Greensboro | 2006 |
| Honeywell Aerospace | group of companies, business, subsidiary company, enterprise | Phoenix | 1936 |
| Hooters | restaurant chain | Atlanta | 1983 |
| Hooters Air | airline | Myrtle Beach | 2003 |
| Hormel | business, enterprise, company, public company | Austin | 1891 |
| Horseshoe Las Vegas | casino, hotel | — | December 5, 1973 |
| Hotels.com | dot-com company, travel website | — | 1991 |
| House of Blues | restaurant chain, business, chain | Los Angeles | November 26, 1992 |
| Houston Independent School District | school district in the United States | Houston | 1924 |
| Howard University | historically black college or university, private not-for-profit educational institution, school, private university | Washington, D.C. | March 2, 1867 |
| Hudson Motor Car Company | business, automobile manufacturer | Detroit | 1909 |
| Hudson Theatre | Broadway theatre, theatre building, movie theater | — | October 19, 1903 |
| Hughes Aircraft Company | aerospace manufacturer | Culver City, Los Angeles | 1932 |
| Hughes Airwest | airline | San Francisco International Airport | 1968 |
| Hult International Business School | business school, educational institution | — | 1964 |
| Hulu | online film database, website, business, video streaming service | Santa Monica | March 2007 |
| Humana | business, enterprise, public company | Louisville | 1961 |
| Humble Bundle, Inc. | video game publisher, digital book and audiobook distribution platform, digital distribution platform | San Francisco | March 1, 2010 |
| Hupmobile | business, automobile manufacturer | Detroit | 1909 |
| Hurley International | business, subsidiary company | Costa Mesa | 1998 |
| Hy-Vee | supermarket chain, business | West Des Moines | 1930 |
| Hyperloop One | business | Los Angeles | June 2014 |
| Häagen-Dazs | food manufacturer, food brand, trademark, ice cream parlor chain | Oakland | 1961 |