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