A propeller fan, comprising: a rotary shaft portion configured to rotate around an axial center; and a plurality of blades (2A, 2B, 2C, 2D, 2E) disposed around an outer circumferential portion of the rotary shaft portion, each of the plurality of blades (2A, 2B, 2C, 2D, 2E) having at least one recessed portion (8A, 8B, 8C, 8D, 8E) that opens at a trailing edge of the blade (2A, 2B, 2C, 2D, 2E), and the at least one recessed portion (8A, 8B, 8C, 8D, 8E) having a first side (5A, 5B, 5C, 5D, 5E) that is close to an inner circumference of the blade (2A, 2B, 2C, 2D, 2E), the first side (5A, 5B, 5C, 5D, 5E) stretching from the trailing edge toward a leading edge of the blade (2A, 2B, 2C, 2D, 2E) and bent toward an outer circumference of the blade (2A, 2B, 2C, 2D, 2E), in each of the plurality of blades (2A, 2B, 2C, 2D, 2E), a projecting portion being formed in a portion of the trailing edge that is closer to the inner circumference than is the at least one recessed portion (8A, 8B, 8C, 8D, 8E), the projecting portion projecting downstream, wherein a line connecting one side end (13A-1) of the projecting portion that is close to the outer circumferential end of the blade (2A, 2B, 2C, 2D, 2E) and an other side end (13A-2) of the projecting portion that is close to an inner circumferential end of the blade (2A, 2B, 2C, 2D, 2E) along an outer circumference of the projecting portion forms a fourth side (13A-3), wherein a straight line connecting the one side end (13A-1) of the projecting portion and the other side (13A-2) end of the projecting portion forms a first virtual line, wherein a line perpendicularly extending to the fourth side (13A-3) from a midpoint of the first virtual line forms a second virtual line, and wherein a maximum projection point of the projecting portion is located closer to the inner circumference than is an intersection of the fourth side (13A-3) and the second virtual line. a rotary shaft portion configured to rotate around an axial center; and a plurality of blades (2A, 2B, 2C, 2D, 2E) disposed around an outer circumferential portion of the rotary shaft portion, each of the plurality of blades (2A, 2B, 2C, 2D, 2E) having at least one recessed portion (8A, 8B, 8C, 8D, 8E) that opens at a trailing edge of the blade (2A, 2B, 2C, 2D, 2E), and the at least one recessed portion (8A, 8B, 8C, 8D, 8E) having a first side (5A, 5B, 5C, 5D, 5E) that is close to an inner circumference of the blade (2A, 2B, 2C, 2D, 2E), the first side (5A, 5B, 5C, 5D, 5E) stretching from the trailing edge toward a leading edge of the blade (2A, 2B, 2C, 2D, 2E) and bent toward an outer circumference of the blade (2A, 2B, 2C, 2D, 2E), in each of the plurality of blades (2A, 2B, 2C, 2D, 2E), a projecting portion being formed in a portion of the trailing edge that is closer to the inner circumference than is the at least one recessed portion (8A, 8B, 8C, 8D, 8E), the projecting portion projecting downstream, wherein a line connecting one side end (13A-1) of the projecting portion that is close to the outer circumferential end of the blade (2A, 2B, 2C, 2D, 2E) and an other side end (13A-2) of the projecting portion that is close to an inner circumferential end of the blade (2A, 2B, 2C, 2D, 2E) along an outer circumference of the projecting portion forms a fourth side (13A-3), wherein a straight line connecting the one side end (13A-1) of the projecting portion and the other side (13A-2) end of the projecting portion forms a first virtual line, wherein a line perpendicularly extending to the fourth side (13A-3) from a midpoint of the first virtual line forms a second virtual line, and wherein a maximum projection point of the projecting portion is located closer to the inner circumference than is an intersection of the fourth side (13A-3) and the second virtual line.