What is the name of the Zoroastrian prayer book for daily use?

The Zoroastrian prayer book for daily use is the Khordeh Avesta.

Its name means “Little Avesta” or “Minor Avesta,” referring to a collection of shorter religious texts rather than one single, uniform book. It was especially intended for lay worshippers and contains prayers used for everyday devotion. The texts are mainly in Avestan, though some manuscript traditions also include Middle Persian, modern Persian, Gujarati, or Sanskrit material.

A typical Khordeh Avesta includes the Niyayishn prayers, the Gāh prayers for the divisions of the day, Yasht hymns, and Afringan blessings. Manuscripts vary considerably, so there is no universally identical table of contents. This diversity is why scholars often describe it as an anthology rather than a fixed canonical volume.

A common mix-up is confusing it with the entire Avesta, the broader body of Zoroastrian scripture. The Gathas are the oldest hymns associated with Zarathustra; the Yasna is a major liturgical text and ceremony; and the Vendidad contains priestly and purity-related material. The Khordeh Avesta instead gathers accessible prayers for regular religious practice.