| 100381 | September 3 | Death | 2012 – Griselda Blanco, Colombian drug lord (b. 1943) |
| 100382 | September 3 | Death | 2012 – Harold Dunaway, American race car driver and pilot (b. 1933) |
| 100383 | September 3 | Death | 2012 – Michael Clarke Duncan, American actor (b. 1957) |
| 100384 | September 3 | Death | 2012 – Siegfried Jamrowski, Russian-German soldier and pilot (b. 1917) |
| 100385 | September 3 | Death | 2012 – Sun Myung Moon, South Korean religious leader and businessman, founded the Unification Church (b. 1920) |
| 100386 | September 3 | Death | 2012 – Charlie Rose, American lawyer and politician (b. 1939) |
| 100387 | September 3 | Death | 2013 – Ralph M. Holman, American lawyer and judge (b. 1914) |
| 100388 | September 3 | Death | 2013 – Pedro Ferriz Santacruz, Mexican-American journalist (b. 1921) |
| 100389 | September 3 | Death | 2013 – José Ramón Larraz, Spanish director and screenwriter (b. 1929) |
| 100390 | September 3 | Death | 2013 – Janet Lembke, American author and scholar (b. 1933) |
| 100391 | September 3 | Death | 2013 – Don Meineke, American basketball player (b. 1930) |
| 100392 | September 3 | Death | 2013 – Lewis Morley, Hong Kong-Australian photographer (b. 1925) |
| 100393 | September 3 | Death | 2014 – Zeus, American dog (b. 2008) |
| 100394 | September 3 | Death | 2014 – Roy Heather, English actor (b. 1935) |
| 100395 | September 3 | Death | 2014 – Aarno Raninen, Finnish singer-songwriter and pianist (b. 1944) |
| 100396 | September 3 | Death | 2014 – A. P. Venkateswaran, Indian soldier and politician, 14th Foreign Secretary of India (b. 1930) |
| 100397 | September 3 | Death | 2015 – Adrian Cadbury, English rower and businessman (b. 1929) |
| 100398 | September 3 | Death | 2015 – Judy Carne, English actress (b. 1939) |
| 100399 | September 3 | Death | 2015 – Carter Lay, American businessman and philanthropist (b. 1971) |
| 100400 | September 3 | Death | 2015 – Binny Yanga, Indian social worker and activist (b. 1958) |
| 100401 | September 3 | Death | 2015 – Zhang Zhen, Chinese general and politician (b. 1914) |
| 100402 | September 3 | Holiday and observance | Christian feast day:MarinusPope Gregory IRemaclusPrudence Crandall (Episcopal Church (USA))September 3 (Eastern Orthodox liturgics) |
| 100403 | September 3 | Holiday and observance | China's victory over Japan commemoration related observances:Armed Forces Day (Republic of China)V-J Day (People's Republic of China) |
| 100404 | September 3 | Holiday and observance | Feast of San Marino and the Republic, celebrates the foundation of the Republic of San Marino in 301. |
| 100405 | September 3 | Holiday and observance | Flag Day (Australia) |
| 100406 | September 3 | Holiday and observance | Independence Day, celebrates the second independence of Qatar from the United Kingdom in 1971. |
| 100407 | September 3 | Holiday and observance | Levy Mwanawasa Day (Zambia) |
| 100408 | September 3 | Holiday and observance | Memorial Day (Tunisia) |
| 100409 | September 3 | Holiday and observance | Merchant Navy Remembrance Day (Canada) |
| 100410 | September 3 | Holiday and observance | Merchant Navy Day (United Kingdom) |