Mark W. Tiedemann

Mark W. Tiedemann (born 1954 in St. Louis, Missouri) is an American science fiction and detective fiction author. He has written novels set in Isaac Asimov's Robot universe, and within his own original universe, known as the Secantis Sequence.

In spring 2005 he was named president of the Missouri Center for the Book, which is the Missouri state adjunct program to the Library of Congress Center for the Book.

Born to Henry and Donna Tiedemann, Mark W. Tiedemann grew up an only child. He wrote several short stories, a few of which he submitted to major SF magazines of the day such as Galaxy, Worlds of If, The Magazine of Fantasy & Science Fiction, though none were accepted for publication.

Upon entering high school, he discovered photography, which became his primary career. Writing still attracted his interest though, and in 1978 he completed a novel, Random Factor, though it was never published. He then wrote several more novels. In 1980, he met his future partner, Donna, who encouraged him to pursue his passion for writing. He met with limited success, with three short stories published before 1988, in small press magazines, the most notable of which was Reveleven, published by Scott Edelman in Edelman's magazine Last Wave in 1986. Tiedemann then applied to and was accepted by the Clarion SF Writers Workshop In the summer of 1988, he attended Clarion with instructors Tim Powers, Lisa Goldstein, Samuel R. Delany, Kim Stanley Robinson, Kate Wilhelm, and Damon Knight. That workshop produced writers such as Kelley Eskridge, Nicola Griffith, and Peg Kerr, and within a year, Tiedemann began selling short stories. His first major sale was Targets, sold to Gardner Dozois, editor of Asimov's Science Fiction Magazine. Several more quickly followed.

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