To provide a spherical shape measuring device and a spherical shape measuring method capable of non-contact measurement of a spherical shape with high accuracy.

The spherical shape measuring device includes: a measured object supporting means 10; a measured object rotating means 20; a spherical shape measuring means 30 having a non-contact displacement gauge 31 and a displacement gauge turning means 32; a displacement gauge position adjusting means; and a measured object position adjusting means 80. The measured object position adjusting means 80 adjusts the position of the center axis of a shaft part 1b of a measured object 1 to the turning center of the noncontact displacement gauge 31.