It is a suffragan diocese of the Archdiocese of Siracusa.

Monsignor Antonio Staglianò is the current bishop of the diocese of Noto.

The diocese was canonically erected on May 15, 1844, by Pope Gregory XVI, separating it from the Archdiocese of Syracuse, of which Noto is suffragan.

The diocese is located in the Province of Syracuse, Sicily, Italy.

The seat of the bishop is in Noto Cathedral.