洛亚诺（意大利语：Loiano）是意大利艾米利亚-罗马涅大区博洛尼亚省的一个镇。

博洛尼亚大学以天文学家乔凡尼·多梅尼科·卡西尼命名的天文台即位于洛亚诺。

Loiano is a town and comune of province of Bologna in the Emilia-Romagna region of Italy in the Tusco-Emilian Apennines at 714 metres (2,343 ft) above sea level. Its population was 4,260 as of the 2003 census. Highway SS 65 connects it to Bologna, 35 kilometres (22 mi) to the north, and Florence, 73 kilometres (45 mi) to the south.