Bandes dessinées, abbreviated BDs and also referred to as Franco-Belgian comics, are comics that are usually originally in French and created for readership in France and Belgium. These countries have a long tradition in comics, separate from that of English-language comics. Belgium is a mostly bilingual country, and comics originally in Dutch are culturally a part of the world of bandes dessinées, even if the translation from French to Dutch far outweighs the other direction.

Comics are a medium used to express ideas with images, often combined with text or other visual information. It typically takes the form of a sequence of panels of images. Textual devices such as speech balloons, captions, and onomatopoeia can indicate dialogue, narration, sound effects, or other information. There is no consensus among theorists and historians on a definition of comics; some emphasize the combination of images and text, some sequentiality or other image relations, and others historical aspects such as mass reproduction or the use of recurring characters. Cartooning and other forms of illustration are the most common image-making means in comics; Photo comics is a form that uses photographic images. Common forms include comic strips, editorial and gag cartoons, and comic books. Since the late 20th century, bound volumes such as graphic novels, comic albums, and tankōbon have become increasingly common, along with webcomics as well as scientific/medical comics.