Andrea Aiuti (17 June 1849 – 28 April 1905) was an Italian prelate of the Catholic Church who worked in the diplomatic service of the Holy See and in the Roman Curia.

Aiuti was a member of the Roman Curia on the staff of the Congregation of the Council and then in the diplomatic service at the nunciature in Brazil.

[citation needed] He published an account of his years in India in English as a guide for the Catholic hierarchy there.

In that role he contributed to Pope Leo XIII's encyclical on the union of the Christian churches, Satis cognitum (1896).

[2] On 12 November 1903, Pope Leo XIII made him cardinal-priest of San Girolamo dei Croati.