Kilkis (Greek: Θ/Κ Κιλκίς) was a 13,000 ton Mississippi-class battleship originally built by the US Navy in 1904–1908. As Mississippi she was purchased by the Greek Navy in 1914, and renamed her Kilkis, along with her sister Idaho, renamed Lemnos. Kilkis was named for the Battle of Kilkis-Lahanas, a crucial engagement of the Second Balkan War. Armed with a main battery of four guns, Kilkis and her sister were the most powerful vessels in the Greek fleet.