A honeycomb filter comprising a plurality of honeycomb fired bodies combined with one another by adhesive layers residing therebetween, each honeycomb fired body comprising a plurality of cells as exhaust gas passages, the cells including exhaust gas introduction cells and exhaust gas emission cells, the exhaust gas introduction cells each having an open end at an exhaust gas inlet side and a plugged end at an exhaust gas outlet side, the exhaust gas emission cells each having an open end at the exhaust gas outlet side and a plugged end at the exhaust gas inlet side; porous cell walls defining the plurality of cells; and an outer wall on an outer periphery thereof, wherein the exhaust gas introduction cells and the exhaust gas emission cells each have a uniform cross-sectional shape throughout from the end at the exhaust gas inlet side to the end at the exhaust gas outlet side excluding the plugged portion in a direction perpendicular to the longitudinal direction of the cells; each exhaust gas emission cell is adjacently surrounded fully by the exhaust gas introduction cells across the porous cell walls; and the cells adjacent to the outer wall consist of the exhaust gas introduction cells wherein the exhaust gas introduction cells include two kinds of cells consisting of first exhaust gas introduction cells (12, 42) and second exhaust gas introduction cells (14, 44) having a larger cross-sectional area than the first exhaust gas introduction cells in a direction perpendicular to the longitudinal direction of the cells, the cross-sectional area of each exhaust gas emission cell (11, 41) in a direction perpendicular to the longitudinal direction of the cell is equal to or larger than that of each second exhaust gas introduction cell in a direction perpendicular to the longitudinal direction of the cell, in the cross section perpendicular to the longitudinal direction of the cells, the exhaust gas emission cells and the exhaust gas introduction cells are all polygonal, and a side facing the exhaust gas emission cell among sides forming the cross-sectional shape of each first exhaust gas introduction cell is longer than a side facing the exhaust gas emission cell among sides forming the cross-sectional shape of each second exhaust gas introduction cell; or one of the sides forming the cross-sectional shape of each first exhaust gas introduction cell faces the exhaust gas emission cell and none of the sides forming the cross-sectional shape of each second exhaust gas introduction cell faces the exhaust gas emission cells. wherein the exhaust gas introduction cells include two kinds of cells consisting of first exhaust gas introduction cells (12, 42) and second exhaust gas introduction cells (14, 44) having a larger cross-sectional area than the first exhaust gas introduction cells in a direction perpendicular to the longitudinal direction of the cells, the cross-sectional area of each exhaust gas emission cell (11, 41) in a direction perpendicular to the longitudinal direction of the cell is equal to or larger than that of each second exhaust gas introduction cell in a direction perpendicular to the longitudinal direction of the cell, in the cross section perpendicular to the longitudinal direction of the cells, the exhaust gas emission cells and the exhaust gas introduction cells are all polygonal, and a side facing the exhaust gas emission cell among sides forming the cross-sectional shape of each first exhaust gas introduction cell is longer than a side facing the exhaust gas emission cell among sides forming the cross-sectional shape of each second exhaust gas introduction cell; or one of the sides forming the cross-sectional shape of each first exhaust gas introduction cell faces the exhaust gas emission cell and none of the sides forming the cross-sectional shape of each second exhaust gas introduction cell faces the exhaust gas emission cells.