| Type | Daily newspaper |
|---|---|
| Format | Tabloid |
| Founder(s) | José Rubén Zamora |
| Founded | 1990 |
| Language | Spanish |
| Headquarters | Guatemala City |
| Website | http://www.s21.com.gt/ |
Siglo Veintiuno (English: Twenty-First Century) or stylized Siglo XXI is a Guatemalan daily newspaper. Founded in 1990 by José Rubén Zamora, the paper earned a reputation for independent, high-risk reporting. In 1995, its staff won the International Press Freedom Awards of the Committee to Protect Journalists and Zamora has won several individual awards for his work with the paper.