Hirairi or hirairi-zukuri (平入・平入造) is a Japanese traditional architectural structure, where the building has its main entrance on the side which runs parallel to the roof's ridge (non gabled-side). The shinmei-zukuri, nagare-zukuri, hachiman-zukuri, and hie-zukuri Shinto architectural styles belong to this type.^[1] It survives mostly in religious settings.

In residential buildings, the entrance side is usually the long one, but from the Edo period onward the opposite became more frequent.