Ortrud is a feminine given name, with variant forms Ortraud and Ortrude. Ortrud may refer to: * Ortrud, a character in Richard Wagner's opera '' Lohengrin'' * (1938–1999), German film actress * Ortrud Mavrin, a character in Anthony Powell's second novel '' Venusberg'' (1932) *

Ortrud Oellermann Ortrud R. Oellermann is a South African mathematician specializing in graph theory. She is a professor of mathematics at the University of Winnipeg. Education and career Oellermann was born in Vryheid. She earned a bachelor's degree, ''cum laude ...

(active from 1981), South African mathematician *

551 Ortrud Ortrud (minor planet designation: 551 Ortrud) is a minor planet orbiting the Sun. It is located in the Main Belt. In light of the practice of the discover c. 1904 to name his asteroids after female characters in opera, it is likely that Ortrud is ...

, a main-belt asteroid

See also