Felix Manz (also Mantz; c. 1498 – 5 January 1527) was an Anabaptist, a co-founder of the original Swiss Brethren congregation in Zürich, Switzerland, and an early martyr of the Radical Reformation.

While he was preaching with George Blaurock in the Grüningen region, they were taken by surprise, arrested and imprisoned in Zürich at the Wellenburg prison.

On 5 January 1527, Felix Manz became the first casualty of the edict, and the first Swiss Anabaptist to be martyred at the hands of magisterial Protestants.

While Manz stated that he wished "to bring together those who were willing to accept Christ, obey the Word, and follow in His footsteps, to unite with these by baptism, and to purchase the rest in their present conviction", Zwingli and the council accused him of obstinately refusing "to recede from his error and caprice".

Manz left written testimony of his faith, an eighteen-stanza hymn, and was apparently the author of Protestation und Schutzschrift (a defense of Anabaptism presented to the Zürich council).

[3] The witness of Felix Manz' life and the other radical Anabaptists continues to be a source of inspiration to Christians today.

[4] The Amish, Baptist, Mennonite and Bruderhof churches all are influenced to varying degrees by Manz and the other Reformation-era Anabaptists.