Abstract: Device for anchoring the foundation of a structure in the ground comprising an anchor (1) and a pull line (8) along an axis (ZZ'), the end (19) of a terminal portion (18) thereof being integral with a fastener (9) secured to the body of the anchor (1). The body comprises a front wing element (2) shaped to go into the ground along an axis (XX') and a rear wing element (3) opposing the pull of the line (8) by abutment in the ground once the anchor is tilted in the ground. In one embodiment, the fastening location (9) is offset to the axis (ZZ') of pull in the direction of the axis (XX') of the anchor body (1). The anchoring device comprises a component (7) for guiding the terminal portion (18) of the pull line (8) between the fastening location (9) and the axis of pull (ZZ'), whereby the fastener is offset. The anchor body (1) comprises a fin-shaped element (6) located on the other side of the plane of the front wing element (2) in relation to the guide component (7).