Angelo di Niccolò Tegliacci (born 1608) was an Italian painter active in Siena.
He was born in Siena. He painted an altarpiece for San Giovannino della Staffa, Siena.[1] It is unclear if he is distantly related or confused with the 14th-century Sienese painter and illuminator Niccolò di Ser Sozzo, felt to be part of the aristocratic Tegliacci family.