How many doors does Genesis mention for Noah’s Ark?

Genesis mentions one door for Noah’s Ark. In Genesis 6:16, the construction instructions describe a single opening or door at the side of the vessel, alongside the window and its three levels.

The wording is part of a compact architectural description. It identifies the Ark’s main structural features without providing a full construction plan or explaining how the interior was divided between people and animals.

The single-door detail is separate from the later statement that the Lord shut the door. Together, the verses describe one entrance and identify who closed it after Noah, his family, and the animals were inside. Artistic depictions sometimes add multiple openings for convenience, but Genesis specifically mentions one door.