The International Centre for Mathematical Sciences (ICMS) is a mathematical research centre based in Edinburgh. According to its website, the Centre is "designed to bring together mathematicians and practitioners in science, industry and commerce for research workshops and other meetings."

In April 1994 the Centre moved to 14 India Street, Edinburgh, the birthplace of James Clerk Maxwell and home of the James Clerk Maxwell Foundation. In 2010 it was relocated to 15 South College Street to accommodate larger events. As of 2020, the ICMS is located within the newly established Bayes centre.^{[1]}^{[2]}

The current scientific director (appointed in 2016) is Professor Paul Glendinning. The ICMS is a member of the European Mathematical Society.^{[3]}