Furniture with a table top flap (T) is equipped with legs (1A, 1B) that form left and right pairs, a table top (2) disposed on the legs (1A, 1B), and table top support mechanisms (3A, 3B) that form left and right pairs that support the table top (2) so that the table top (2) can make a flap movement on the legs (1A, 1B). Each leg (1A, 1B) uses a configuration provided with a strut (11), a rear leg (12) that extends from the lower end of the strut (11) to a usage end (x), and a front leg (13) that is positioned inside of the rear leg (12) and extends from the lower end of the strut (11) to the opposite usage end (y). The left and right front legs (13) of other furniture (Q), which has an identical structure, is inserted between the rear legs (12) of both legs (1A, 1B) when the table top (2) is flipped up, so as to be able to be stacked, and for each leg (1A, 1B), the outer surface (110) of the strut (11) and the outer surface (122) of the rear leg (12) are made to be continuous in a substantially flush manner.