Lorenzo Tonelli is an Italian footballer who plays as a defender for Serie A club Empoli.

Born in Florence, Tuscany, Tonelli started his professional career at Empoli. He made his debut during 2010–11 Serie B season. He made his first appearance on 5 September 2010. On 26 April 2015, Tonelli was punched by Atalanta's German Denis after he burst into the Empoli dressing room; Denis was subsequently given a five match ban for this action on Tonelli.

Under the new regime of Ciro Ferrara, he received his first call-up for Italy U-21 on 11 November 2010. He made his debut on 17 November 2010, replacing Giulio Donati in the second half of the friendly match, winning against Turkey 2–1.

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