[en] Superconducting magnets for fusion reactor applications are being developed in the U.S., Europe, Japan and the USSR. A substantial technological base already exists, but magnets for fusion face special problems and strong incentives for higher performance. In the U.S. high-field magnets for mirrors are being addressed by construction of the superconducting (NbTi) MFTF and by Nb₃Sn conductor development. Large toroidal field magnets for tokamaks are being developed through the Large Coil Program, which involves design and construction of NbTi and Nb₃Sn coils by six industrial teams, three in the U.S. and three in other countries