Upon the expiration of his Fenerbahce contract, the Turkey international will move to the San Siro until the end of the 2018-19 campaign.
Inter has completed the free transfer of Caner Erkin from Fenerbahce on a three-year contract.
The defender's contract with the Turkish giant expires at the end of June, with the Serie A side confirming the signing on its official website.
Caner, who has been included in the 23-man Turkey squad for Euro 2016 by Fatih Terim, will be able to link up with his new teammates from July 1.
The 27-year-old won two Super Lig and two Turkiye Kupasi titles, as well as a Super Kupa, during his six seasons at Fenerbahce.