August 11 is the 223rd day of the year (224th in leap years). There are 142 days remaining.
- 1950 — Leo Hannan is apprehended.
- 1967 — Péter Kovács is apprehended.
- 1970 — Paul Durousseau is born.
- 1973 — Giorgio Vizzardelli died.
- 1978 — Randy Greenawalt is apprehended.
- 1980 — Carol Bundy is apprehended.
- 1999 — James Otto Earhart died.
- 2010 — Elias Abuelazam is apprehended.
- 2010 — Robert Diaz died.