December 13 is the 347th day (348th in leap years) of the year. There are 18 days remaining.
- 1863 — Carl Großmann is born.
- 1934 — Albert Fish is apprehended.
- 1957 — Garry Artman is born.
- 1963 — Francisco Benitez is born.
- 1982 — Kyriakos Papachronis is apprehended.
- 1999 — Nathaniel Bar-Jonah is apprehended.
- 2006 — Ángel Nieves Díaz died.
- 2010 — "The Long Island Serial Killer"'s victim, Megan Waterman is found.
- 2011 — "The Long Island Serial Killer"'s suspected victim, Shannan Gilbert is found.
- 2011 — David Lefèvre is apprehended.
- 2019 — Lawrence Bittaker died.
- 2022 — Roberto José Carmona is apprehended.