1981 Companies
52 3M 6,079.5
185 Abbott Laboratories 2,038.2
294 ACF Industries 1,044.6
280 Aeroquip-Vickers 1,159.9
147 Agway 2,658.6
242 Air Products & Chem. 1,420.8
293 Akzona 1,054.0
63 Alcoa 5,147.6
229 Allegheny International 1,524.3
182 Allis-Chalmers 2,063.9
45 Altria Group 7,328.3
312 Alumax 968.4
322 AM International 909.6
131 AMAX 2,949.2
43 Amerada Hess 7,869.0
460 American Bakeries 535.6
168 American Broadcasting 2,256.2
76 American Can 4,812.2
106 American Cyanamid 3,453.9
459 American Hoist & Derrick 538.6
155 American Motors 2,552.6
145 American Standard 2,673.6
225 AMF 1,534.0
9 Amoco 26,133.1
281 AMP 1,155.4
493 Ampex 460.1
257 Amstar 1,285.0
321 Amsted Industries 914.9
335 Anchor Hocking 857.5
213 Anderson Clayton 1,703.1
110 Anheuser-Busch 3,295.4
354 Apogent Technologies 792.9
303 Applera 996.1
364 Arcata 755.7
139 Archer Daniels Midland 2,802.0
58 ARMCO 5,678.0
252 Armstrong Holdings 1,323.0
199 Asarco 1,817.0
40 Ashland 8,118.4
22 AT&T Technologies 12,032.1
11 Atlantic Richfield 23,744.3
425 Avery Dennison 618.7
263 Avnet 1,266.8
151 Avon Products 2,569.1
388 A.O. Smith 693.7
Since 1955, when the first FORTUNE 500 was created, more than 1,800 companies have appeared on the list. Many of these companies have changed names over this period, owing to mergers, acquisitions, and bankruptcies. Other companies have gone private, or simply changed their names.

Companies are listed by the name with which they were associated in 2005, or at the time of their most recent list appearance before that. FORTUNE 500 companies that have been acquired by other FORTUNE 500 companies are listed under the name of the acquiring company. Rankings have been revised to reflect corrections in data.
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