2020 Top 100
18: AT&T Inc.
| Top 100 Revenue: | $2,263,453,000 |
| Defense Revenue: | $947,642,000 |
| Civilian Revenue: | $1,315,811,000 |
| 2019 Revenue: | $181.2 billion |
| 2019 Earnings: | $15 billion |
| 2018 Revenue: | N/A |
| 2018 Earnings: | N/A |
| Number of employees: | 247,000 |
| Headquarters: | San Antonio |
| Website: | www.att.com |
| Leadership: | John Stankey, CEO Xavier Williams, president, AT&T public sector and First Net |
| Ticker: | T |
| Lines of business: | N/A |
| Major customers: | N/A |
| Major contracts/projects: | EIS, FirstNet |