To provide a lens holder with its position highly accurately adjusted with respect to a prescribed direction, and especially to the rotational axis of a rotative drive part, and also provide a lens measuring instrument using the lens holder, and a lens holder adjustment method.

This lens holder 120 used for holding a lens 105 under inspection, comprises a lens hold part 122 for holding the lens 105, and a reflective surface 123 for reflecting light in a direction substantially orthogonal to a plane including the hold part 122. Preferably, the lens holder 120 has a cylindrical shape while the hold part 122 is formed on one end face of the cylindrical shape.