Thistledown

Thistledown may refer to:


 * The soft feathery material which protects the fruiting part of a thistle
 * Thistledown (film), a 1938 British musical film
 * Thistledown (racecourse), a thoroughbred racing track in North Randall, Ohio, near Cleveland
 * Thistledown, Colorado
 * Thistledown family, characters in The Dark Elf Trilogy by R. A. Salvatore
 * Operation Thistledown, a World War II operation in Italy
 * A fictional starship in The Way, a trilogy of novels by Greg Bear