A position indicator includes a tubular chassis in which an opening is made on one end in an axial direction as a pen tip side and another end. A position indicator cartridge is housed in a hollow part of the chassis. The position indicator cartridge includes a core body unit having a coil that forms part of a resonant circuit that is wound partly around a bar-shaped magnetic core, part of the magnetic core around which the coil is not wound forming a pen tip part, and a tubular body unit that houses at least a capacitor that forms part of the resonant circuit. A change circuit also forms part of the resonant circuit and is configured to change a resonant frequency or a phase of the resonant circuit according to a writing pressure applied to the core body unit.