Sebastián Ducete (or de Ucete; 1568–between 1619 and 1621) was a Spanish sculptor. He was born to the sculptor Pedro Ducete Díez in Toro, Zamora in whose workshop Sebastián collected first experiences. From 1591 on he was trained by the sculptor Juan Sanz de Torrecilla from Palencia. From 1595 to 1598 he worked in one workshop with his uncle Juan Ducete the Younger. 1598 entered Ducete's workshop as an apprentice. From 1612 to Ducete's death he was his partner. The workshop of these two is known as Toro workshop. In 1611 Ducete was in Valladolid.