A propeller fan comprising: a shaft provided on a rotation axis (CL) of the propeller fan; and a blade provided on an outer peripheral side of the shaft , wherein the blade has a trailing edge on a rear side of the blade in a rotation direction (RD) of the propeller fan , and wherein the trailing edge includes a first trailing edge located on an innermost side of the trailing edge , and a second trailing edge adjacent to and outward of the first trailing edge , wherein where an innermost point of the first trailing edge is a first connection point (P1), a connection point between the first trailing edge and the second trailing edge is a second connection point (P2), a straight line that extends through the rotation axis (CL) and the first connection point (P1) is a reference line (BL), and an innermost one of points of tangency between the second trailing edge and a tangent line (TL) that extends through the first connection point (P1) is a first vertex (P3), the second connection point (P2) is located forward of the reference line (BL) in the rotation direction (RD), or located on the reference line (BL), the second trailing edge is located rearward of the second connection point (P2) in the rotation direction (RD), and a length (L1) of the first trailing edge is greater than or equal to a length (L2) of part of the second trailing edge that is located between the second connection point (P2) and the first vertex (P3), characterized in that the length (L1) of the first trailing edge is not more than twice the length (L2) of the part of the second trailing edge that is located between the second connection point (P2) and the first vertex (P3). a shaft provided on a rotation axis (CL) of the propeller fan; and a blade provided on an outer peripheral side of the shaft , wherein the blade has a trailing edge on a rear side of the blade in a rotation direction (RD) of the propeller fan , and wherein the trailing edge includes a first trailing edge located on an innermost side of the trailing edge , and a second trailing edge adjacent to and outward of the first trailing edge , wherein where an innermost point of the first trailing edge is a first connection point (P1), a connection point between the first trailing edge and the second trailing edge is a second connection point (P2), a straight line that extends through the rotation axis (CL) and the first connection point (P1) is a reference line (BL), and an innermost one of points of tangency between the second trailing edge and a tangent line (TL) that extends through the first connection point (P1) is a first vertex (P3), the second connection point (P2) is located forward of the reference line (BL) in the rotation direction (RD), or located on the reference line (BL), the second trailing edge is located rearward of the second connection point (P2) in the rotation direction (RD), and a length (L1) of the first trailing edge is greater than or equal to a length (L2) of part of the second trailing edge that is located between the second connection point (P2) and the first vertex (P3), characterized in that the length (L1) of the first trailing edge is not more than twice the length (L2) of the part of the second trailing edge that is located between the second connection point (P2) and the first vertex (P3). <EOS>