| 91411 | August 12 | Death | 1941 – Bobby Peel, English cricketer and umpire (b. 1857) |
| 91412 | August 12 | Death | 1943 – Vittorio Sella, Italian photographer and mountaineer (b. 1859) |
| 91413 | August 12 | Death | 1944 – Joseph P. Kennedy, Jr., American lieutenant and pilot (b. 1915) |
| 91414 | August 12 | Death | 1952 – David Bergelson, Ukrainian author and playwright (b. 1884) |
| 91415 | August 12 | Death | 1955 – Thomas Mann, German author and critic, Nobel Prize laureate (b. 1875) |
| 91416 | August 12 | Death | 1955 – James B. Sumner, American chemist and academic, Nobel Prize laureate (b. 1887) |
| 91417 | August 12 | Death | 1959 – Mike O'Neill, Irish-American baseball player and manager (b. 1877) |
| 91418 | August 12 | Death | 1964 – Ian Fleming, English spy, journalist, and author (b. 1908) |
| 91419 | August 12 | Death | 1966 – Artur Alliksaar, Estonian poet and author (b. 1923) |
| 91420 | August 12 | Death | 1967 – Esther Forbes, American historian and author (b. 1891) |
| 91421 | August 12 | Death | 1973 – Walter Rudolf Hess, Swiss physiologist and academic, Nobel Prize laureate (b. 1881) |
| 91422 | August 12 | Death | 1973 – Karl Ziegler, German chemist and engineer, Nobel Prize laureate (b. 1898) |
| 91423 | August 12 | Death | 1979 – Ernst Boris Chain, German-Irish biochemist and academic, Nobel Prize laureate (b. 1906) |
| 91424 | August 12 | Death | 1982 – Henry Fonda, American actor, singer, and producer (b. 1905) |
| 91425 | August 12 | Death | 1982 – Salvador Sánchez, Mexican boxer (b. 1959) |
| 91426 | August 12 | Death | 1984 – Lenny Breau, American guitarist and songwriter (b. 1941) |
| 91427 | August 12 | Death | 1985 – Kyu Sakamoto, Japanese singer-songwriter and actor (b. 1941) |
| 91428 | August 12 | Death | 1985 – Manfred Winkelhock, German race car driver (b. 1951) |
| 91429 | August 12 | Death | 1986 – Evaline Ness, American author and illustrator (b. 1911) |
| 91430 | August 12 | Death | 1988 – Jean-Michel Basquiat, American painter (b. 1960) |
| 91431 | August 12 | Death | 1989 – Samuel Okwaraji, Nigerian footballer (b. 1964) |
| 91432 | August 12 | Death | 1989 – William Shockley, American physicist and academic, Nobel Prize laureate (b. 1910) |
| 91433 | August 12 | Death | 1990 – B. Kliban, American cartoonist (b. 1935) |
| 91434 | August 12 | Death | 1990 – Dorothy Mackaill, English-American actress and singer (b. 1903) |
| 91435 | August 12 | Death | 1992 – John Cage, American composer and theorist (b. 1912) |
| 91436 | August 12 | Death | 1996 – Victor Ambartsumian, Georgian-Armenian astrophysicist and academic (b. 1908) |
| 91437 | August 12 | Death | 1996 – Robert Gravel, Canadian actor, director, and playwright (b. 1945) |
| 91438 | August 12 | Death | 1996 – Mark Gruenwald, American author and illustrator (b. 1953) |
| 91439 | August 12 | Death | 1997 – Luther Allison, American singer and guitarist (b. 1939) |
| 91440 | August 12 | Death | 1997 – Jack Delano, American photographer and composer (b. 1914) |