《黑马牧人书》（The Shepherd of Hermas），天主教译为“何而马牧者”，二世纪时基督教，是使徒教父著作中最长的一卷。黑马是在第一世纪末第二世纪初在罗马教会中的先知。《黑马牧人书》在早期教会很受重视，有的教父接受该书的权威。此书在《西乃抄本》（Codex Sinaiticus）位于新约正典书卷之后，爱任纽和特土良亦都曾引用之。在《青山抄本》（Codex Claromontanus）中，黑马牧人书位列《使徒行传》与《保罗行传》（Acts of Paul）之间。

The Shepherd of Hermas (Greek:Ποιμὴν τοῦ Ἑρμᾶ, Poimēn tou Herma; sometimes just called The Shepherd) is a Christian literary work of the late 1st or mid-2nd century, considered a valuable book by many Christians, and considered canonical scripture by some of the early Church fathers such as Irenaeus. The Shepherd was very popular amongst Christians in the 2nd and 3rd centuries. It was bound as part of the New Testament in the Codex Sinaiticus, and it was listed between the Acts of the Apostles and the Acts of Paul in the stichometrical list of the Codex Claromontanus.