A modular spear that has three interchangeable sections, namely, a spear tip, a spear shaft, and a tail end, allowing the spear to be adapted for many situations. The spear shaft has an elongated body into which a first receiving cavity and a second receiving cavity are terminally are bored the first receiving cavity being positioned opposite the second receiving cavity along the elongated body. Furthermore, the spear shaft has a first fastener assembly and a second fastener assembly for securing the spear tip and the tail end to the spear shaft. The first fastener assembly is positioned about the first receiving cavity, while the second fastener assembly is positioned about the second receiving cavity. The spear tip is positioned through the first fastener assembly and into the first receiving cavity. Meanwhile, the tail end is positioned through the second fastener assembly and into the second receiving cavity.