Nichelino (Piedmontese: Ël Niclin) is a comune (municipality) in the Metropolitan City of Turin in the Italian region of Piedmont, located about 8 kilometres (5 miles) southwest of Turin.

Nichelino borders the following municipalities: Turin, Orbassano, Beinasco, Moncalieri, Candiolo, and Vinovo.

During Roman times, Nichelino served as a transit point on the road leading to the Alps and France. The first historical records describe Nichelino as a hamlet under the jurisdiction of the neighboring town of Moncalieri. Ancient maps show the lands along the Sangone River as part of Moncalieri's possessions. These references continue until the 17th century, when the Occelli family began laying the groundwork for Nichelino's development.

The late 16th century was marked by tragedy, as the plague became the dominant event in the local chronicles. The first recorded case occurred in 1586 at Palazzo Darmelli, with Borgata Palazzo identified as the epicenter of the epidemic. Twenty suspected plague spreaders were imprisoned and executed in Piazza Castello in Turin. The plague persisted in the area until the late 17th century.

The Occelli family, originating from Cuneo, rose to prominence in the Turin region in the latter half of the 16th century. Their connection to Nichelino began on June 22, 1694, when Vittorio Amedeo II granted a royal patent to Count Niccolò Manfredo Occelli and his heirs, establishing the *Feudo di Nichilino*. To earn the title of Counts of Nichelino, the Occelli family paid "ten thousand lire" to the royal treasury.

The feudal privileges included noble titles, justice administration, hunting and fishing rights on the Sangone River, control over agricultural activities, and management of tolls. The official establishment of the feudal estate occurred on August 21, 1694. In 1705, amidst a war with France, Count Niccolò Manfredo paid an additional "thousand lire" to secure the right to appoint local mayors. However, the Occelli family's influence waned after Niccolò Manfredo's death, and the rival Umoglio family began to gain prominence.

With the death of Niccolò Manfredo Occelli, the Umoglio family, Counts of Vernea and Pramollo, assumed significant public roles. During the early 19th century, Nichelino, like much of Piedmont, experienced the cultural and administrative influence of French annexation. Despite these changes, the Umoglio family retained local power, holding the mayoral office in 1833.

Key developments during this period include the relocation of the cemetery in 1836 and the introduction of female teachers in 1854, who began to work alongside priests traditionally responsible for education. Additionally, the arrival of the first train on the Turin–Pinerolo railway line on July 27, 1854, marked a significant milestone in the city's modernization.