Capo Ferro, or more specifically Ridolfo Capo Ferro of Cagli was one of the great Italian fencing masters of the 16th and 17th century. His greatest contribution to this field was his manual on rapier defense, Gran Simulacro Dell'arte e Dell'uso Della Scherma, or, "Great Representation of the art and of the Use of Fencing", published in 1610. It is considered by many to be the greatest treatment on rapier fighting ever written.

This manual is very well known as it defines some of the most commonly used offensive and defensive fencing tactics. Among these are the various guards, such as the high, medium, and low guards, and slight variations of these, and the ways one might attack from these various guards. He also introduces a generalized set of very commonly used parries, and ripostes to be made from these.

Capo Ferro's style is still frequently used as part of many a fencer's techniques.