List of Famous people who are 81

Linda Virginia Marlowe is an Australian-born British film, theatre, and television actress. She is noted for her association with Steven Berkoff, performing in many of his theatrical works, creating a one-woman show based on his female characters called Berkoff's Women, and being referred to as his "muse" by a number of critics.

Mitsuhiro Adachi is a Japanese former baseball pitcher. Mitsuhiro played with the Hankyu Braves from 1959 to 1979. He won the Nippon Professional Baseball Most Valuable Player Award in the Pacific League in 1967.

Jan Lööf is a Swedish illustrator, author, comic creator, and jazz musician.

Donald Gene Saari is an American mathematician, a Distinguished Professor of Mathematics and Economics and former director of the Institute for Mathematical Behavioral Sciences at the University of California, Irvine. His research interests include the n-body problem, the Borda count voting system, and application of mathematics to the social sciences.

Ernest Sosa is an American philosopher primarily interested in epistemology. Since 2007 he has been Board of Governors Professor of Philosophy at Rutgers University, but he spent most of his career at Brown University.

Rudolf Dreßler is a German politician and diplomat.

Petru Gherghel is a Romanian prelate of the Catholic Church. He is the ninth and current Bishop of Iaşi.