Feliciano (spelled Felizian in Germany) Ninguarda (1524 – 5 June 1595) was an Italian Roman Catholic prelate and one of the main movers of the Counter Reformation.
A series of synods in mid Germany from the 1570s onwards confirmed Ninguarda's reforming ideas, deciding on the foundation of seminaries in Alsace and the County of Tyrol.
His fellow-Dominican pope Pius V (who had visited the convent of Sant'Antonio at Morbegno and had a profound knowledge of the Valtellina and its frictions between Protestant and Catholic) and then pope Gregory XIII (of whom Ninguarda was a confidant) then utilised him for the difficult beginnings of the Counter Reformation in Germany, Austria and Bohemia, at first as visitor to the convents of all orders, then as papal nuncio to mid Germany (1578–82) and Switzerland (1586–88).
Between 1588 and 1595 he was bishop of Como, a diocese which included Valtellina and Valposchiavo, then both under the political control of the Three Leagues - in these Alpine borderlands with the Protestant world, Ninguarda tried to stop the spread of Protestantism.
The reports from his apostolic visits to these towns in summer 1589 are historically important - they were the first apostolic visits by a Catholic bishop after a ban of many years by the Swiss authorities and the reports describe the parishes' and churches' states, the situation in other countries, the names of some priests and the numbers of Protestant residents and also include several theological and pastoral publications.