Castle of Antognolla, Medieval castle complex in northern Perugia, Italy.

The Castle of Antognolla is a fortified settlement on the northern slopes of Monte Tezio, north of Perugia. Its stone walls and towers enclose a core of buildings, and the complex includes the church of Sant'Agata, whose crypt is the only remnant of a Benedictine monastery dedicated to Saint Peter recorded in 1174.

The first record of the site dates to 1174, when a Benedictine monastery dedicated to Saint Peter stood here; its only surviving trace is the crypt of the church of Sant'Agata. By the mid-1200s the settlement is cited as a castrum and already belonged to the Antognolla family. In 1399 Pope Boniface IX raised the county to a fief for Ruggero di Antognolla and his heirs.

The name comes from the Antognolla or Antognolli family, one of Perugia's oldest noble houses, recorded in chronicles from the 12th century and living in Porta Santa Susanna. The only surviving trace of the Benedictine monastery of San Pietro documented here in 1174 is the crypt of the church of Sant'Agata.

The site is easily accessible from Perugia and has pathways crossing the entire grounds. Visitors should wear sturdy shoes since the walking routes cross sloping and uneven terrain.

The castle and its estate are undergoing a tourism development project, and the castle belongs to Andrey Yakunin, son of oligarch Vladimir Yakunin, former president of Russian Railways. The Guglielmi family, owners from 1836, took the title Count of Antognolla and added it to their surname as Guglielmi d'Antognolla.