Honeycomb filter

The utility model provides a honeycomb filter which is excellent in ignition performance, low in pressure loss and excellent in erosion resistance and thermal shock resistance. The honeycomb filter is provided with: a columnar honeycomb structure (4) having porous partition walls (1) disposed so as to surround a plurality of cells (2); and a porous sealing part (5) which is disposed at any one end of the cell, and in which, in a cross-section orthogonal to the direction in which the cell extends, the shape of the cell is a shape in which a polygonal corner part (21) is chamfered into an arc shape having a radius of curvature (R) of 10-100 [mu] m. The honeycomb structure includes, in a cross-section orthogonal to the direction in which the cells extend, a central portion (15) including the center of gravity (O) of the cross-section and an outer peripheral portion (16) located outside the central portion, the thickness T1 of the partition walls in the central portion being 0.0127-0.0381 mm thicker than the thic