|Founder||Malatesta da Verucchio|
|Final ruler||Pandolfo IV Malatesta|
|Estate(s)||Castel Sismondo (Rimini)
Rocca Malatestiana (Cesena)
In the 11th century the family had possessions in the region of Gabicce Mare, Gatteo and Poggio Berni. Giovanni Malatesta (d. 1150) owned some land between rivers Marecchia and Rubicon, and was the first to settle down in Rimini. His son married into the Traversari family who were lords of Ravenna and Rimini during the 12th and 13th centuries. In 1186 the Malatesta became lords of Torriana. Giovanni's grandsons Giovanni and Malatesta I. Malatesta (1183–1248) founded the branches of the Counts of Sogliano al Rubicone (extinguished in 1640) and "della Penna" of Pennabilli and Verucchio (until 1462). In 1216 they became citizen of Rimini.
Malatesta I. became podestà (chief magistrate) of Pistoia in 1228 and of Rimini in 1239 and 1247. During the struggles between papal and imperial followers (Guelphs and Ghibellines), he supported emperor Frederick II. His son however, Malatesta da Verucchio (d. 1312), switched sides after the emperor's defeat near Parma in 1248, and became leader of the Guelphs while Guido I. of Montefeltro took the lead of the Ghibellines in the Marche and Romagna regions. Malatesta da Verucchio made himself sole master of the city ("signore") after the expulsion of the family's Ghibelline rivals, the Parcitadi, in 1295. His hunchback son Giovanni Malatesta is chiefly famous because he murdered his wife Francesca da Polenta and his younger brother Paolo in 1285, having discovered them in adultery, and the murder is recorded in Dante's Inferno as well as in a story by Giovanni Boccaccio.
Malatestino I., Giovanni's brother, became capitano of the Guelphs of Bologna in 1296 and of Florence in 1303. In 1312 he destroyed his Ghibelline cousins' castle at Sogliano, and in 1312 followed his father as lord of Rimini. During the fourteenth and fifteenth centuries, the Malatestas ruled over a number of cities in the Romagna and the Marche, including Pesaro, Fano, Cesena, Fossombrone and Cervia. Several Malatestas were condottieri at the service of various Italian states. Malatesta Novello built the Malatestiana Library at Cesena from 1447 to 1452.
The most famous was Sigismondo Pandolfo Malatesta, who was engaged in conflict with the papacy over territorial claims, as well as with his rival Federico da Montefeltro. In the end, he lost almost all of his territories, except for Rimini that he held with support of the Republic of Venice. He had however built the cathedral of Rimini, the Tempio Malatestiano, from 1450. His grandson Pandolfo was eventually expelled from Rimini in 1500 by Cesare Borgia and the city was finally incorporated in the Papal States in 1528, after the last failed attempt of Pandolfo's son, Sigismondo. During the 16th and 17th centuries, the family still provided a number of condottieri, the Sogliano branch extinguished in 1640, the last of the Rimini branch was the Jesuit Roberto Malatesta (d. 1708), the Ghiaggiolo branch extinguished with Lamberto in 1757.