| A.D. Vision | film production company | 1992 |
| BMC Software | business, enterprise | 1980 |
| Conoco | oil company, defunct organization | 1875 |
| Enron | criminal organization, business, enterprise, public company | 1985 |
| Houston Independent School District | school district in the United States | 1924 |
| KBR, Inc. | private military company, public company | 1998 |
| Museum of Fine Arts, Houston | production company, nonprofit organization, art museum, museum | 1900 |
| National Wrestling Alliance | business, enterprise, professional wrestling promotion | 1948 |
| Occidental Petroleum | business, public company | 1920 |
| Rice University | research university, private not-for-profit educational institution, private university | 1891 |
| SLB | business, enterprise, public company, oilfield service company | 1926 |
| Sysco | business, public company | 1969 |
| United Space Alliance | business, enterprise | August 1995 |