Alexander Wilhelm von Brill (20 September 1842 – 18 June 1935)^[1]: 17 was a German mathematician.

Born in Darmstadt, Hesse, Brill was educated at the University of Giessen, where he earned his doctorate under supervision of Alfred Clebsch. He held a chair at the University of Tübingen, where Max Planck was among his students. In 1933, he joined the National Socialist Teachers League as one of the first members from Tübingen.^[1]: 21

The London Science Museum contains sliceform objects prepared by Brill and Felix Klein.

• Vorlesungen über ebene algebraische Kurven und Funktionen. 1925.^[2]
• Vorlesungen über allgemeine Mechanik. 1928.^[3]
• Vorlesungen zur Einführung in die Mechanik raumerfüllender Massen. 1909.
• Graphische Darstellungen aus der reinen und angewandten Mathematik. 1894.
• with Max Noether: Über algebraische Funktionen und ihre Anwendung in der Geometrie. Mitt. Göttinger Akad.1873^{[permanent dead link]}, and their article with the same name in the Mathematischen Annalen Bd.7, 1874, Online^{[permanent dead link]}
• with Max Noether: Die Entwicklung der Theorie der algebraischen Funktionen in älterer und neuerer Zeit. Jahresbericht DMV 1894.^{[permanent dead link]}
• Das Relativitätsprinzip. Teubner 1912.^[4]
• Über Kepler's Astronomia nova. Stuttgart 1930. (15 pp.)

• Brill–Noether theory
• Chasles–Cayley–Brill formula
• Discriminant of an algebraic number field