March 18 is the 77th day of the year (78th in leap years). There are 288 days remaining.
- 1856 — Samuel D. Richards is born.
- 1903 — Samuel Herbert Dougal is apprehended.
- 1919 — Franklin Click is born.
- 1922 — Bernard Pesquet is born.
- 1932 — Harry F. Powers died.
- 1935 — William Darrell Lindsey is born.
- 1938 — Lester Brockelhurst died.
- 1943 — Bruno Lüdke is apprehended.
- 2004 — Steven Washington died.
- 2013 — Robert White is apprehended.