This workshop discusses the state of the art quantum state discrimination and its applications to quantum information tasks. It will be jointly hosted by Kyung Hee University (KHU), the Korea Advanced Institute of Science and Technology (KAIST), and Seoul National University (SNU), and will take place from April 8 to 11, 2026, at Room 1205, 12F, Dongseo University (Centum Campus), 55 Centum Jungang-ro, Haeundae-gu, Busan, Korea.