A Rencong (Acehnese: Reuncong) is a traditional weapon from Aceh, Indonesia used by the Acehnese. Just as with the Keris, people attribute mystical powers to Rencongs. The Rencong is still being worn during traditional ceremonies and is used in Pencak Silat.
It has a sharp blade with a slightly convex back. It is slightly shaped like an L and similar in appearance to a Kris. A Rencong's blade can vary in length from 10 to 50 cm. The blade can be cranked like a Kris but sometimes it is straight. It is put in a scabbard that is made of wood, ivory, horn, or sometimes even silver or gold. The Rencong is worn on one's belt around the waist.