Odin is a Swedish-led joint astronomy/aeronomy mission with participation from Canada, Finland and France.

Odin is a dual-mission small satellite for research of both astronomical and atmospheric topics. The scientific goals were set by a group of scientists from the participating countries, called the Odin Science Team. The main part of the project cost is carried by Sweden and SNSB thus has the overall project responsibility, supported by CSA of Canada, TEKES of Finland, and CNES of France. SNSB has entrusted the Swedish Space Corporation with the implementation of the project.