The Atacama Large Millimeter/sub-millimeter Array (ALMA) is a gigantic radio telescope constructed in Chile with full cooperation of the Republic of Chile, and through a global consortium of East Asian (including Japan), North American, and the member states of the European Organisation for Astronomical Research in the Southern Hemisphere (ESO). ALMA is an array of 66 antennas full scale (composed of 12-meters and 7-meters antennas in diameter) designed to observe astronomical objects at millimeter/sub-millimeter wavelength, which is at the shortest wavelength range in the radio wave spectrum. The NAOJ Chile was established in April 2012 with the mission to complete the construction of ALMA and support its science operations so that ALMA continuously produces significant scientific results. In January 2019, the NAOJ Chile spun off the NAOJ ALMA Project; the new NAOJ Chile is focused on the mission to manage and oversee the NAOJ researchers working for the Joint ALMA Observatory (JAO) and to facilitate the on-site operations of ALMA in Chile. Besides the activities related to ALMA, the NAOJ Chile is also in charge of the operations of the ASTE telescope, a 10-meters diameter telescope built in the vicinity of ALMA.