A table for seat provided facing a seat installed above a floor of a vehicle, including a top plate, and a leg part attached to a support portion provided below the seat to movably support the top plate from an accommodation position below the sitting portion to a use position above a sitting portion of the seat. The leg part includes a first leg part rotatably connected to the support portion, and a second leg part having a first end rotatably connected to the first leg part and a second end rotatably connected to the top plate. The table for seat further includes a biasing member disposed between the support portion and the second leg part to apply a biasing force to the second leg part from the support portion.