Fra' Roberto Viazzo (born October 29, 1952)[1] is an Italian medical doctor and a member of the Sovereign Council of the Sovereign Military Order of Malta.

Viazzo is the head of the Anesthesia, Resuscitation, and Pain Therapy Section at the Azienda Sanitaria Locale di Vercelli.

[2] He was named an Ufficiale of the Order of Merit of the Italian Republic, 2 June 2022.

On January 12, 2017, Viazzo made his solemn vows as a Knight of Justice in the Sovereign Military Order of Malta at the Santuario Diocesano Madonna degli Infermi in Vercelli.

[3] Viazzo was elected to a five-year term as a member of the Sovereign Council in May 2019.