An image processing apparatus and an image processing method are provided. The image processing apparatus includes: a division control unit that, on the basis of a first boundary dividing an image into a plurality of partial areas, further sets a second boundary and divides each of the partial areas into a plurality of slices; and an encoding unit that encodes the image on the basis of the first boundary and the second boundary, in which the division control unit sets the second boundary such that the plurality of slices included in the partial area has unequal numbers of lines, and the slice situated at the bottom among the plurality of slices included in the partial area is not a slice having the most lines in the partial area.