休斯顿的世界500强企业总部 Fortune 500 Company Headquarters in Houston

Top publicly traded companies in Houston for 2013 with Texas and U.S. ranks
Texas		Corporation		US
2		Phillips 66		4
5		ConocoPhillips		45
7		Enterprise Products Partners		64
8		Sysco		65
9		Plains All American Pipeline		77
11		Halliburton		106
14		Baker Hughes		135
18		National Oilwell Varco		144
21		Apache Corporation		167
22		Marathon Oil		174
23		Waste Management		200
29		EOG Resources		233
30		Kinder Morgan		265
34		Cameron International		310
35		KBR		334
37		Group 1 Automotive		343
38		CenterPoint Energy		344
39		Enbridge Energy Partners		38
42		Quanta Services		413
44		FMC Technologies		417
46		Targa Resources		435
48		MRC Global		451
49		Calpine		459
51		Spectra Energy		451
Notes
Rankings for fiscal year ended January 31, 2013
Energy and oil (21 companies)
Source: Fortune[119]

Information is from wikipedia under the term "Houston"