Clock towers in Avellino, Clock tower at Piazza Amendola, Avellino, Italy

The Torre dell'Orologio is a Baroque tower about 36 metres high above Piazza Amendola, with a base of squared ashlar blocks set along the Salita dell'Orologio behind the square's buildings. It originally had two levels, the upper one open; a third level was added later, carrying a bell clock and a "diana" struck to sound alarm.

The tower's origin is debated: tradition places it on a lookout tower of Avellino's old walls, while recent studies date its construction to the 17th century under Prince Francesco Marino I Caracciolo, possibly to a design by Cosimo Fanzago, though no document confirms this. The Neapolitan architect Giovan Battista Nauclerio is documented. It was restored in 1782 with public money, as a plaque naming mayor Pietro Rossi and architect Luigi Maria de Conciliis records, and collapsed almost entirely in the earthquake of 23 November 1980, then rebuilt as far as possible with original elements.

The tower's name comes from the clock and bell level added above the original two floors, together with a "diana" bell struck by hammer to sound an alarm in case of danger. Its top is still visible from the end of via Francesco Tedesco to the east and of Corso Vittorio Emanuele II to the west, along the old Regia strada delle Puglie.

The tower's base stands behind the buildings on Piazza Amendola, along Salita dell'Orologio near the entrance to the Grotte longobarde. Its top can be seen from the far ends of via Francesco Tedesco to the east and Corso Vittorio Emanuele II to the west.

The tower appears on the cover of the scientific journal Peps. Its summit can be seen from the end of via Francesco Tedesco to the east and from Corso Vittorio Emanuele II to the west, both following the old Regia strada delle Puglie along which wheat from Puglia was once traded to Naples.