| 104191 | September 12 | Birth | 1944 – Fred Fay, American activist (d. 2011) |
| 104192 | September 12 | Birth | 1944 – Leonard Peltier, American activist |
| 104193 | September 12 | Birth | 1944 – Vladimir Spivakov, Russian violinist and conductor |
| 104194 | September 12 | Birth | 1944 – Barry White, American singer-songwriter, producer, and actor (d. 2003) |
| 104195 | September 12 | Birth | 1944 – Colin Young, Barbadian-English singer (The Foundations) |
| 104196 | September 12 | Birth | 1945 – Maria Aitken, Irish-English actress, director, and producer |
| 104197 | September 12 | Birth | 1945 – David Garrick, English singer (d. 2013) |
| 104198 | September 12 | Birth | 1945 – Milo Manara, Italian author and illustrator |
| 104199 | September 12 | Birth | 1945 – John Mauceri, American conductor and producer |
| 104200 | September 12 | Birth | 1946 – Tony Bellamy, American singer-songwriter and guitarist (Redbone) (d. 2009) |
| 104201 | September 12 | Birth | 1947 – Bjørn Floberg, Norwegian actor |
| 104202 | September 12 | Birth | 1947 – David Grant, English engineer and academic |
| 104203 | September 12 | Birth | 1947 – Gerald Howarth, English soldier, pilot, and politician, Minister for International Security Strategy |
| 104204 | September 12 | Birth | 1948 – Luis Lima, Argentinian tenor |
| 104205 | September 12 | Birth | 1948 – Steve Turre, American trombonist and educator |
| 104206 | September 12 | Birth | 1948 – Max Walker, Australian cricketer, sportscaster, and architect |
| 104207 | September 12 | Birth | 1949 – Charles Burlingame, American captain and pilot (d. 2001) |
| 104208 | September 12 | Birth | 1949 – Irina Rodnina, Russian figure skater and politician |
| 104209 | September 12 | Birth | 1950 – Marguerite Blais, Canadian journalist and politician |
| 104210 | September 12 | Birth | 1950 – Gustav Brunner, Austrian engineer |
| 104211 | September 12 | Birth | 1950 – Bruce Mahler, American actor and screenwriter |
| 104212 | September 12 | Birth | 1950 – Mike Murphy, Canadian ice hockey player and coach |
| 104213 | September 12 | Birth | 1950 – Cynthia Myers, American model and actress (d. 2011) |
| 104214 | September 12 | Birth | 1951 – Bertie Ahern, Irish accountant and politician, 11th Taoiseach of Ireland |
| 104215 | September 12 | Birth | 1951 – Norm Dubé, Canadian ice hockey player |
| 104216 | September 12 | Birth | 1951 – Ray Gravell, Welsh rugby player and actor (d. 2007) |
| 104217 | September 12 | Birth | 1951 – Joe Pantoliano, American actor and producer |
| 104218 | September 12 | Birth | 1951 – Gerald Stano, American serial killer (d. 1998) |
| 104219 | September 12 | Birth | 1951 – Ali-Ollie Woodson, American singer-songwriter, keyboard player, and actor (The Temptations) (d. 2010) |
| 104220 | September 12 | Birth | 1952 – Gerry Beckley, American singer-songwriter and guitarist (America) |