The present invention provides a lens for a light emitting element (a luminous flux control member) that can ensure sufficient spread of light even with a smaller number of light emitting elements. The luminous flux control member (10) of the present invention includes: a dome shaped aspherical lens body (11). The lens body (11) includes: a base surface (13); and a dome shaped curved surface (12). The base surface (13) has a base concave portion (131) centered on a central axis, a concave surface of the base concave portion (131) has a light incident region for incident light emitted from a light emitting element, the dome shaped curved surface (12) has a light emitting region for emitting incident light from the light incident region to an outside, the light emitting region of the curved surface (12) has an elliptical shape as viewed from a central axis direction centered on the central axis, in which a length (X) of an X axis orthogonal to the central axis and a length (Y) of a Y axis orthogonal to the central axis and the X axis satisfy X