2019 Top 100
19: AT&T
| Top 100 Revenue: | $1,979,165,000 |
| Defense Revenue: | $989,583 ,000 |
| Civilian Revenue: | $989,583,000 |
| 2018 Revenue: | N/A |
| 2018 Earnings: | N/A |
| 2017 Revenue: | N/A |
| 2017 Earnings: | N/A |
| Number of employees: | N/A |
| Headquarters: | Dallas |
| Website: | https://www.att.com/ |
| Leadership: | N/A |
| Ticker: | T |
| Lines of business: | N/A |
| Major customers: | N/A |
| Major contracts/projects: | N/A |