To provide a folding chair capable of placing an article on a shelf plate, closing the lower ends of both leg parts while the shelf plate remains to be attached, facilitating the handling such as moving while the shelf plate being attached is not obstructive, and further achieving space saving.

The shelf plate 50 is folded or brought down and formed so as to be positioned inside at least one of a main frame 30 or a sub frame 40, when the folding chair 10 is in a folded state. The shelf plate 50 is formed to be usable as a shelf suspended between the main frame 30 and the sub frame 40, when the folding chair 10 is in a usable state.