Huldricus (also ''Huldaricus'', ''Huldrych'', ''Huldreich'') is a variant of the given name Ulrich first introduced by Zwingli in the early 16th century and occasionally used as a variant of the name since. * Huldrych Zwingli (1484–1531), leader of the Swiss Reformation *''Huldaricus Mutius'', latinized name of Ulrich Hugwald (1496-1571) *'' Fridericus Huldaricus'', latinized name of Frederick Ulrich, Duke of Brunswick-Lüneburg (1591–1634) * Huldaricus Schönberger (Johann Ulrich Schönberger, 1601–1649), German blind organist, organ builder and polymath * Huldreich Georg Früh (1903–1945), Swiss composer

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