The New American Bible (NAB) is an English translation of the Bible first published in 1970. The 1986 Revised NAB is the basis of the revised Lectionary, and it is the only translation approved for use at Mass in the Latin-rite Catholic dioceses of the United States and the Philippines and the 1970 first edition is also an approved Bible translation by the Episcopal Church in the United States.

Stemming originally from the Confraternity Bible, a translation of the Vulgate by the Confraternity of Christian Doctrine, the project transitioned to translating the original biblical languages in response to Pope Pius XII's 1943 encyclical Divino afflante Spiritu. The translation was carried out in stages by members of the Catholic Biblical Association of America (CBA) "from the Original Languages with Critical Use of All the Ancient Sources" (as the title pages state). These efforts eventually became the New American Bible under the liturgical principles and reforms of the Second Vatican Council (1962–1965).