Since 1988 when Pohang Light Source (PLS) construction began, the Korean accelerator community has grown very fast and has expanded from electrons to protons and to rare isotopes. Two major activities have been completed: the PLS-II (2009–2011) which is an upgrade of the old PLS, and the Korea Multi-purpose Accelerator Complex (KOMAC, 2002–2012) in Gyeongju. There are another two projects currently on-going: the X-ray Free Electron Laser Facility at Pohang Accelerator Laboratory (PAL-XFEL, 2011–2015), and the Rare Isotope Science Project (RISP, 2011–2021) in Daejeon. Besides these major activities, there are several industrial accelerators and medical ones. In this report, the details of these activities are summarized.