Confessio catholica is one of the main works of German Orthodox Lutheran theologian Johann Gerhard (1582–1637). It seeks to prove the evangelical and catholic character of the doctrine of the Augsburg Confession from the writings of approved Roman Catholic authors.

Confessio catholica, in qua doctrina catholica et evangelica, quam ecclesiae Augustanae confessioni addictae profilentur, ex Romano-catholicorum scriptorum suffragiis confirmatur (4 parts, Frankfort and Leipsic, 1634–37), is based upon the Catalogus testium veritatis of Flacius. It is more comprehensive than its title denotes, being at the same time an extensive apology and polemic of the Evangelical Creed. The first part is general and treats the principia et media nostrae et pontificiae religionis. The other three volumes treat the disputed articles of faith. Its contents may be compared with Gerhard's Theological Commonplaces: On the Church, an earlier handling with many themes in common with the Confessio Catholica.

•  This article incorporates text from a publication in the public domain: Jackson, Samuel Macauley, ed. (1914). New Schaff–Herzog Encyclopedia of Religious Knowledge (third ed.). London and New York: Funk and Wagnalls. ((cite encyclopedia)): Missing or empty |title= (help) [1]
• Bengt Hägglund: Polemics and Dialogue in John Gerhard's Confessio catholica. LUTHERAN QUARTERLY Summer 2000 Issue.

• Confessio Catholica (Frankfurt, 1679), Single volume edition.
• Confessio Catholica (Jena, 1634), volume 1: Introductory volume
• Confessio Catholica (Jena, 1634), volume 2/1: On the Word of God, Christ, the Roman Pontiff, councils, and the Church
• Confessio Catholica (Jena, 1636), volume 2/2: On clergy, monks, laity, purgatory, saints, sacraments, Baptism, confirmation, Eucharist, and the Mass
• Confessio Catholica (Jena, 1637), volume 2/3: On penance, extreme unction, sacrament of order, matrimony, the grace of the first man, sin, grace and free choice, justification, and good works