| 27931 | March 12 | Death | 2011 – Olive Dickason, Canadian historian and journalist (b. 1920) |
| 27932 | March 12 | Death | 2011 – Joe Morello, American drummer (Dave Brubeck Quartet) (b. 1923) |
| 27933 | March 12 | Death | 2011 – Nilla Pizzi, Italian singer (b. 1919) |
| 27934 | March 12 | Death | 2012 – Hasan Gafoor, Indian police officer (b. 1949) |
| 27935 | March 12 | Death | 2012 – Samuel Glazer, American businessman, co-founded Mr. Coffee (b. 1923) |
| 27936 | March 12 | Death | 2012 – Dick Harter, American basketball player and coach (b. 1930) |
| 27937 | March 12 | Death | 2012 – Michael Hossack, American drummer (The Doobie Brothers) (b. 1946) |
| 27938 | March 12 | Death | 2012 – Friedhelm Konietzka, German-Swiss footballer and manager (b. 1938) |
| 27939 | March 12 | Death | 2013 – George Burditt, American lawyer and politician (b. 1921) |
| 27940 | March 12 | Death | 2013 – Clive Burr, English drummer and songwriter (Iron Maiden, Samson, and Trust) (b. 1957) |
| 27941 | March 12 | Death | 2013 – Stanley Cole, American architect (b. 1924) |
| 27942 | March 12 | Death | 2013 – Michael Grigsby, English director and producer (b. 1936) |
| 27943 | March 12 | Death | 2013 – Ganesh Pyne, Indian painter and illustrator (b. 1937) |
| 27944 | March 12 | Death | 2014 – Věra Chytilová, Czech actress, director, and screenwriter (b. 1929) |
| 27945 | March 12 | Death | 2014 – Richard Coogan, American actor (b. 1914) |
| 27946 | March 12 | Death | 2014 – Paul C. Donnelly, American scientist and engineer (b. 1923) |
| 27947 | March 12 | Death | 2014 – Jackie Gaughan, American businessman (b. 1920) |
| 27948 | March 12 | Death | 2014 – Shawn Kuykendall, American soccer player (b. 1982) |
| 27949 | March 12 | Death | 2014 – Ola L. Mize, American colonel, Medal of Honor recipient (b. 1931) |
| 27950 | March 12 | Death | 2014 – José Policarpo, Portuguese cardinal (b. 1936) |
| 27951 | March 12 | Death | 2015 – Willie Barrow, American minister and activist (b. 1924) |
| 27952 | March 12 | Death | 2015 – Erol Büyükburç, Turkish singer-songwriter and actor (b. 1936) |
| 27953 | March 12 | Death | 2015 – Michael Graves, American architect, designed the Portland Building and the Humana Building (b. 1934) |
| 27954 | March 12 | Death | 2015 – Ada Jafri, Pakistani poet and author (b. 1924) |
| 27955 | March 12 | Death | 2015 – Terry Pratchett, English journalist, author, and screenwriter (b. 1948) |
| 27956 | March 12 | Death | 2015 – Carl, Prince of Wied (b. 1961) |
| 27957 | March 12 | Holiday and observance | Arbor Day (China and Taiwan) |
| 27958 | March 12 | Holiday and observance | Christian feast day:FinaLuigi OrioneMaximilian the martyrPope Gregory I (Eastern Orthodox Church, Eastern Catholic Church, and Anglican Communion)Theophanes the ConfessorZhang Dapeng (one of Martyr Saints of China)March 12 (Eastern Orthodox liturgics) |
| 27959 | March 12 | Holiday and observance | Girl Scout Birthday (United States) |
| 27960 | March 12 | Holiday and observance | Grækarismessa (Mass of St. Gregory). According to tradition, the oystercatcher, the Faroes' national bird returns this day. This event is celebrated in the capital, Tórshavn (Faroe Islands) |