Pedro de Ángelis (1784–1859) was a Neapolitan journalist, historian and politician.

He visited and then resided in some European cities, including Paris and Geneva, where he possibly met his wife, the Swiss Mélanie Dayet.

[5] He traveled to Rio de Janeiro after the fall of the Rosas government, returning to Argentina shortly after.

[9] He was related to the main writers of the time like Jean Charles Léonard de Sismondi, a personal friend.

[10] Among his best works is included Colección de Obras y Documentos relativos a la Historia Antigua y Moderna de las Provincias del Río de la Plata, a book of several volumes on Argentine history from the beginning of colonization to the Revolution of May, and the Declaration of Independence.