The Three Girl Rhumba's Sword is a fictional weapon in the 2007 video game No More Heroes. It is a katana crafted with the power of lethal cutting force. It is used by the eighth-ranked assassin Shinobu. Despite appearing to be nothing more than a normal katana (as opposed to the beam-type katanas), the Three Girl Rhumba's Sword has the supernatural power to emit sword-shaped projectiles of energy, dubbed by its user the "Sonic Sword." The scabbard of the Three Girl Rhumba's Sword is also decorated with tiny Pure White Lover Bizarre Jelly figurines.

There is one trading card featuring the Three Girl Rhumba's Sword in the Design Materials set, "Shinobu's Weapon". Another card in the set also features Shinobu wielding the Three Girl Rhumba's Sword as well.