A vehicle door frame, comprising: an outer member (10; 60), which constitutes a glass-run housing portion (11; 61) made of a board, wherein the outer member (10; 60) has a basal end portion (11d; 61b) and is located on a first side; an inner member made of a board including a body portion, which forms a framework of a window frame, wherein the inner member is coupled to the outer member (10; 60) on a second side that is opposite to the first side, wherein the outer member (10; 60) includes an edge portion, which constitutes the glass-run housing portion (11; 61) at a position that is apart from the basal end portion (11d; 61b), a folded portion (12; 62; 74), which is provided on the edge portion and has a substantially U-shaped cross section, wherein the folded portion (12; 62; 74) includes an opening (13; 63), which opens to the second side, and a first-side end (12b; 62a; 74a) that is positioned nearest to the first side, and a return portion (14; 64; 71; 72) provided at a position that is closer to the basal end portion (11d; 61b) than the folded portion (12; 62; 74) of the glass-run housing portion (11; 61), the inner member includes an extended portion, which is provided on the body portion and extends on the first side; an edge portion, which is provided on the extended portion and configured to be inserted into the opening (13; 63) of the folded portion (12; 62; 74), and a distal end surface, which is provided on the edge portion of the extended portion, wherein a projection portion is provided on the distal end surface and protrudes toward the first side, the projection portion is arranged at a predetermined position on the inner member in a longitudinal direction, and the projection portion is configured to be heated and melted through current concentration when a resistance welding is performed, and the distal end surface and a facing portion of the folded portion (12; 62; 74) are pressure-bonded to each other, the vehicle door frame being characterized in that the return portion (14; 64; 71; 72) is configured to raise the portion that is closer to the basal end portion (11d; 61b) than the folded portion (12; 62; 74) of the glass-run housing portion (11; 61) in a flat manner to a position on a vehicle outer side away from the position of the first-side end (12b; 62a; 74a) of the folded portion (12; 62; 74). an outer member (10; 60), which constitutes a glass-run housing portion (11; 61) made of a board, wherein the outer member (10; 60) has a basal end portion (11d; 61b) and is located on a first side; an inner member made of a board including a body portion, which forms a framework of a window frame, wherein the inner member is coupled to the outer member (10; 60) on a second side that is opposite to the first side, wherein the outer member (10; 60) includes an edge portion, which constitutes the glass-run housing portion (11; 61) at a position that is apart from the basal end portion (11d; 61b), a folded portion (12; 62; 74), which is provided on the edge portion and has a substantially U-shaped cross section, wherein the folded portion (12; 62; 74) includes an opening (13; 63), which opens to the second side, and a first-side end (12b; 62a; 74a) that is positioned nearest to the first side, and a return portion (14; 64; 71; 72) provided at a position that is closer to the basal end portion (11d; 61b) than the folded portion (12; 62; 74) of the glass-run housing portion (11; 61), an edge portion, which constitutes the glass-run housing portion (11; 61) at a position that is apart from the basal end portion (11d; 61b), a folded portion (12; 62; 74), which is provided on the edge portion and has a substantially U-shaped cross section, wherein the folded portion (12; 62; 74) includes an opening (13; 63), which opens to the second side, and a first-side end (12b; 62a; 74a) that is positioned nearest to the first side, and a return portion (14; 64; 71; 72) provided at a position that is closer to the basal end portion (11d; 61b) than the folded portion (12; 62; 74) of the glass-run housing portion (11; 61), the inner member includes an extended portion, which is provided on the body portion and extends on the first side; an edge portion, which is provided on the extended portion and configured to be inserted into the opening (13; 63) of the folded portion (12; 62; 74), and a distal end surface, which is provided on the edge portion of the extended portion, wherein an extended portion, which is provided on the body portion and extends on the first side; an edge portion, which is provided on the extended portion and configured to be inserted into the opening (13; 63) of the folded portion (12; 62; 74), and a distal end surface, which is provided on the edge portion of the extended portion, wherein a projection portion is provided on the distal end surface and protrudes toward the first side, the projection portion is arranged at a predetermined position on the inner member in a longitudinal direction, and the projection portion is configured to be heated and melted through current concentration when a resistance welding is performed, and the distal end surface and a facing portion of the folded portion (12; 62; 74) are pressure-bonded to each other, the vehicle door frame being characterized in that the return portion (14; 64; 71; 72) is configured to raise the portion that is closer to the basal end portion (11d; 61b) than the folded portion (12; 62; 74) of the glass-run housing portion (11; 61) in a flat manner to a position on a vehicle outer side away from the position of the first-side end (12b; 62a; 74a) of the folded portion (12; 62; 74).