| Baker Hughes | business, enterprise, public company | 1987 |
| Citgo | business, gas station chain | 1910 |
| ConocoPhillips | business, enterprise, public company | 1875 |
| Continental Airlines | airline | 1934 |
| Continental Express | airline | 1986 |
| Crown Castle International Corp. | organization, real estate investment trust, company, public company | January 1, 1994 |
| Enterprise Products | business, public company | 1968 |
| FMC Technologies | business, public company | 2000 |
| Hennessey Performance Engineering | business, automobile manufacturer | 1992 |
| Marathon Oil | business, enterprise, public company | 1887 |
| Museum of Fine Arts, Houston | production company, nonprofit organization, art museum, museum | 1900 |
| National Oilwell Varco | business, enterprise, public company, oilfield service company | 1862 |
| National Wrestling Alliance | business, enterprise, professional wrestling promotion | 1948 |
| Neutral Buoyancy Laboratory | neutral buoyancy pool, laboratory | 1995 |
| Noble Energy | business, enterprise, public company | 1932 |
| NRG Energy | business, public company | 1905 |
| Occidental Petroleum | business, public company | 1920 |
| Pennzoil | business, enterprise | 1963 |
| Pi Studios | video game developer | 2002 |
| Rainforest Cafe | restaurant chain, business | 1994 |
| 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 |
| The University of Texas MD Anderson Cancer Center | hospital, public educational institution of the United States, university | 1941 |
| United Space Alliance | business, enterprise | August 1995 |
| Waste Management, Inc | business, public company | 1968 |