Bob Langnas is a printmaker, painter, and mixed-media artist. Much of his studio work deals with the theme of entropy and its societal implications.

He received his Master of Fine Arts degree from the University of Pennsylvania in 1991.  He has also studied at Harvard University’s Graduate School of Design and the Philadelphia College of Art (University of the Arts).

Langnas has an extensive exhibition record and has judged more than 30 shows. He has served on the Special Exhibitions Committee of the St. Louis Artists’ Guild, the Forums Committee of Art St. Louis, and the Artists' Advisory Board of the Foundry Art Centre.

He has been a full-time faculty member in the nationally-accredited art department at St. Louis Community College’s Florissant Valley campus since 2000. Prior to taking that position he taught at Culver-Stockton College (Canton, MO) and Delaware County Community College (Media, PA). Since 1990 he has taught all levels of drawing, design, painting, printmaking, illustration, and art history. He has also given numerous art- and antiquities-themed lectures and workshops to community and academic groups over the years, and serves as a member of the Editorial Advisory Board of KOINON: The International Journal of Classical Numismatic Studies.