As of my last update, Johns Hopkins University does not offer an online Master of Science in Mathematics specifically. However, they do offer online programs in related fields such as Applied and Computational Mathematics, Data Science, and Engineering. It's essential to check their official website or contact their admissions office for the most current information on their online program offerings in mathematics or related disciplines.
For students specifically interested in an online Master of Science in Mathematics, there are other universities and institutions that may offer such programs. These programs typically focus on advanced topics in pure mathematics, applied mathematics, or specific branches of mathematics such as algebra, analysis, geometry, or statistics. Each program may have its own specialization areas and curriculum structure, so it's advisable to research and compare programs based on your academic and career goals.