William Ware Theiss (November 20, 1930 - December 15, 1992), also called Bill Theiss, was a costume designer for television and film.

His film credits as costume designer include Spartacus, Harold and Maude, Bound for Glory, Pete's Dragon, Dog Soldiers, Butch and Sundance: The Early Days, The Man with One Red Shoe, and Heart Like a Wheel. His television credits include Star Trek (the original series and The Next Generation: he designed the Starfleet uniforms for TNG).

He was born in Boston, Massachusetts, the son of Harold Hodgson Theiss & Helen Theiss, and was named for his grandfather, William Hodgson, and his grandmother's family, Ellen (Ware) Hodgson.

He was nominated for the Academy Award for Costume Design three times.

The Theiss Theory of Titillation, which claims states that the degree to which a costume is considered sexy is proportional to how likely it is to fall off is named after him.

References

• The Hodgson, Ware, & Theiss Genealogy available from Darren McMannis (dmc@southwind.net).
• IMDB page for William Ware Theiss (http://www.imdb.com/name/nm0857382/)
• A page with photographs of his designs (http://www.dame-mehri.com/Theiss%20at%20his%20best/btheiss.html)