The National Institute for Mathematical Sciences (NIMS; ) is a Korean government-funded mathematics research institute. Their work focuses both basic research and applied mathematics with industrial and medical applications.
Founded in 2005, NIMS became an affiliated research institute of the Institute for Basic Science in 2012. After delays for multiple years, relocation is planned for late 2023. The vision of NIMS is to "attain a global top 10 competitiveness in industrial mathematics research by 2028". NIMS celebrated its 20th anniversary in 2025.