A biopsy needle includes: a tubular outer needle including a first needle tip at one end in a longitudinal direction of the outer needle； and an inner needle having a columnar shape and configured to be inserted into the outer needle and movable along the longitudinal direction. The inner needle includes: a second needle tip at a distal end of the inner needle； an inclined surface that is inclined toward the second needle tip； and concave portions provided on first and second side surfaces of the inner needle, the first side surface facing a first direction perpendicular to a cross section parallel to the longitudinal direction, the second side surface facing a second direction opposite to the first direction, a part of the inclined surface being included in an area obtained by projecting the concave portions in a direction parallel to a transverse direction of the inner needle.
