San Nicolo dell'Isola Church, Romanesque church on a promontory in Sestri Levante, Italy.

San Nicolo dell'Isola is a church with Romanesque and Gothic elements standing on a promontory in Sestri Levante. The building features three naves divided by columns with cubic capitals, a pyramid-shaped bell tower, and a triple lancet window on its facade.

Built around 1151 near the promontory called "Isola", it was one of Sestri Levante's first parish seats and became a subsidiary seat of the Diocese of Brugnato in 1519. Its parish was suppressed in the early 17th century, when the new basilica of Santa Maria di Nazareth took over the title, as the church had grown too small for the town. The presbytery was reworked in the Baroque period, and restorations in 1912, 1928 and 1951 removed later additions.

The church was the seat of one of Sestri Levante's first parish communities and kept the title until the early 17th century, when the new basilica of Santa Maria di Nazareth took over. Its name comes from the nearby promontory called "Isola". In 1519 it became a subsidiary seat of the diocese of Brugnato.

The church is easily reached from the nearby Baia del Silenzio, making it convenient for both religious visits and architectural exploration. The promontory setting allows visitors to view the structure from different angles while also enjoying views of the bay.

On the left side of the church, a stone fragment of an 8th-century chancel enclosure is set into the wall, alongside medieval tombstones and inscriptions. It is the oldest surviving element at the site, older than the 1151 building itself.