蒙泰吉阿迪诺是圣马力诺的9个自治市(堡)之一。总面积3.31 km²。总人口818人(2006)。蒙泰吉阿迪诺与菲奥伦蒂诺、法尔齐亚诺为邻。菲奥伦蒂诺分为1个村。1463年，蒙泰吉阿迪诺并入圣马力诺，为圣马力诺最后一次领土扩大。

Montegiardino is one of the 9 communes or "castelli" of San Marino. It has 910 inhabitants (October 2013) in an area of 3.31 km².

It is home to the University of the Republic of San Marino, the country's only university.