| BMC Software | business, enterprise | 1980 |
| Citgo | business, gas station chain | 1910 |
| Compaq | technology company, business, enterprise | February 16, 1982 |
| 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 |
| Houston Grand Opera | opera company | 1955 |
| National Oilwell Varco | business, enterprise, public company, oilfield service company | 1862 |
| Occidental Petroleum | business, public company | 1920 |
| Pi Studios | video game developer | 2002 |
| 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 |