Alongside the six-year prison sentence, he was also banned from ever holding public office again.
Alemanno – who was the city’s rightwing mayor from 2008 to 2012 – immediately vowed to appeal the sentence, denying any wrongdoing.
“I’m innocent, I have always said it and I will repeat it before the judges on appeal,” he told reporters.
Alemanno added that his legal team will launch an appeal as soon as they have read the ruling.
The trial is a result of the 2015 Mafia Capitale scandal, in which investigators exposed a network of influence-peddling taking in criminals, businessmen and politicians.
Prosecutors sent 46 defendants to trial following the investigation.
Alemanno was accused of having received more than €200,000 in illicit funds from various sources in return for appointing a key figure in the scandal to a senior post.
Prosecutors said he also directed city funds to a cooperative run by another figure in the network.
The leader of the network was Massimo Carminati, a former far-right activist already convicted of membership of a criminal gang in the 1980s.
Prosecutors said Carminati’s right-hand man was Salvatore Buzzi, the head of a cooperative that worked for the Rome city council.
Buzzi served as a mediator between the political sector and the criminal network led by Carminati.
Both men were convicted on appeal in September 2018.
Carminati was sentenced to 14 years and six months in jail, while Buzzi is serving 18 years and four months.
