Papyrus 40 (in the Gregory-Aland numbering), designated by 𝔓40, is an early copy of the New Testament in Greek.

The manuscript paleographically has been assigned to the 3rd century.

The Greek text of this codex is a representative of the Alexandrian text-type, rather proto-Alexandrian, Aland named it as "Free text", and placed it in Category I because of its date.

[1] This manuscript is closer to Codex Sinaiticus than to Codex Alexandrinus and Vaticanus.

[2] It is currently housed at the Papyrussammlung der Universität in the University of Heidelberg (Inv.