A falchion is a fairly short, one edged sword of European origin. Falchions are found in different forms from around the 11th century up to and including the 16th century. In some versions the falchion looks rather like the scramasax and later the sabre, and in some versions the form is irregular or machete like.

Unlike the double edged swords of Europe, few actual swords of this type have survived to the present day. It is presumed that these swords had a lower average quality and status than the longer, more expensive swords. It is also possible that falchions were used as tools when they were not pressed into service as weapons.

There is ample pictoral evidence of falchions used in combat by commoners and noblemen alike, and this type of sword was most likely fairly popular.