List of Famous people born on September 23rd

Richard Wilhelm Karl Theodor Ritter von Hertwig, also Richard Hertwig or Richard von Hertwig, was a German zoologist and professor of 50 years, notable as the first to describe zygote formation as the fusing of spermatozoa inside the membrane of an egg cell during fertilization. Richard Hertwig was the younger brother of Oscar Hertwig, who also analyzed zygote formation.

Fergus Stewart Ewing is a Scottish politician, serving as the Scottish Government's Cabinet Secretary for Rural Economy and the Scottish National Party Member of the Scottish Parliament (MSP) for Inverness and Nairn.

Pekka Halonen was a painter of Finnish landscapes and people in the national romantic style. His favorite subjects were the Finnish landscape and its people which he depicted in his Realist style.

Mary Church Terrell was one of the first African-American women to earn a college degree, and became known as a national activist for civil rights and suffrage. She taught in the Latin Department at the M Street school —the first African American public high school in the nation—in Washington, DC. In 1896, she was the first African-American woman in the United States to be appointed to the school board of a major city, serving in the District of Columbia until 1906. Terrell was a charter member of the National Association for the Advancement of Colored People (1909) and the Colored Women's League of Washington (1894). She helped found the National Association of Colored Women (1896) and served as its first national president, and she was a founding member of the National Association of College Women (1910).

Brigadier-General John Townshend St Aubyn, 2nd Baron St Levan,, known as Hon. John Townshend St Aubyn from 1866 to 1908, was a British army officer and peer.

Anthony Peter Smith was an American sculptor, visual artist, architectural designer, and a noted theorist on art. He is often cited as a pioneering figure in American Minimalist sculpture.