Ex palazzo di Giustizia di Chiavari, Gothic palace in Piazza Mazzini, Chiavari, Italy.

The Ex Palazzo di Giustizia is a Tuscan neo-Gothic building on piazza Mazzini, designed by Giuseppe Partini and erected in 1886. Its symmetrical facade is divided into three floors by string courses, with seven bifora windows per floor, and is topped by Ghibelline merlons and a clock tower. A crenellated tower of 1537 from the old Cittadella survives within the structure.

The building was erected in 1886 to a design by architect Giuseppe Partini, on the site of the 15th-century Cittadella built by the Republic of Genoa as a centre of civil and military power; its 1537 crenellated tower is still visible, incorporated into the palace. It served as Chiavari's courthouse until 2013, when it was decommissioned after a new glass-and-concrete courthouse by architect Giuseppe Canessa was completed; a reform of judicial seats then suspended the move and merged the Chiavari court's activity into that of Genoa.

The square in front of the palace holds a bronze monument to Giuseppe Mazzini, made by sculptor Augusto Rivalta in 1888. The building itself stands on the site of the 15th-century Cittadella, the Genoese Republic's civil and military stronghold, whose 1537 crenellated tower is still visible within the palace.

The building faces Piazza Mazzini in the historic centre, with the bronze monument to Giuseppe Mazzini by Augusto Rivalta (1888) directly opposite. The 1537 crenellated tower of the old Cittadella is still visible, incorporated into the palace. The former courtrooms closed in 2013, so the interior is not open as a working courthouse.

The crenellated tower of 1537, built with the 15th-century Cittadella of the Republic of Genoa, still stands inside the 1886 courthouse. The building was abandoned as a court in 2013 after a new glass-and-concrete courthouse by Giuseppe Canessa was finished, but a reform merging the Chiavari tribunal into Genoa's suspended the move.