Halloween or Hallowe'en also known as Allhalloween, All Hallows' Eve, or All Saints' Eve, is a celebration observed in several countries on 31 October, Halloween fabrics are fabrics with Halloween-themed designs and patterns. They can be used for a variety of projects, such as costumes, decorations, quilts, and crafts.

Common Halloween fabric patterns include:

Pumpkins   
Ghosts   
Bats   
Skeletons   
Spiders   
Witches   
Monsters   
Candy corn   
Jack-o'-lanterns
Halloween fabrics are often made from cotton, but they can also be made from other materials, such as polyester, flannel, and fleece. They are available in a variety of colors, but black, orange, purple, and green are the most popular choices.   

If you are looking for Halloween fabrics, you can find them at your local fabric store or online.

 There are many different retailers that sell Halloween fabrics, so you are sure to find something that you like.