July 18 is the 199th day (200th in leap years) of the year, with 166 days remaining.
- 1872 — Mary Ann Cotton is apprehended.
- 1910 — Roberta Elder is born.
- 1946 — Jose Miculax Bux died.
- 1953 — Bandali Debs is born.
- 1960 — Richard Clarey is born.
- 1963 — Andrew Kokoraleis is born.
- 1989 — Thierry El Borgi is apprehended.
- 1989 — Philippe Siauve is apprehended.
- 1989 — Blanche Taylor Moore is apprehended.
- 1999 — Todd Alan Reed is apprehended.
- 2002 — Gerald Gallego died.
- 2003 — Manuel Octavio Bermúdez is apprehended.
- 2005 — Amir Qayyum is apprehended.
- 2015 — Neal Falls died.
- 2017 — Ivan Strack is apprehended.