Portal:Biography/Selected anniversaries/September 27
- 1389 - Cosimo de Medici, ruler of Florence (d. 1464)
- 1722 - Samuel Adams, American revolutionary leader (d. 1803)
- 1824 - William "Bull" Nelson, American Civil War general (d. 1862)
- 1871 - Grazia Deledda, Italian writer, Nobel laureate (d. 1936)
- 1894 - Lothar von Richthofen German pilot (d. 1922)
- 1918 - Martin Ryle, English radio astronomer, Nobel laureate (d. 1984)
- 1934 - Wilford Brimley, American actor (d. 2020)
- 1942 - Alvin Stardust, English singer (d. 2014)
- 1947 - Meat Loaf, American singer (d. 2022) (pictured)
- 1972 - Gwyneth Paltrow, American actress
- 1978 - Jon Rauch, American baseball player
- 1980 - Asashoryu, Mongolian sumo wrestler