Franky (フランキー, Furankī) also known by his moniker "Cyborg" Franky is a fictional character in the One Piece franchise created by Eiichiro Oda. The character made his first appearance in the 329th chapter of the series, which was first published in Japan in Shueisha's Weekly Shōnen Jump magazine on July 17, 2004.

The son of pirate parents who abandoned him at age nine, Cutty Flam (カティ・フラム, Kati Furamu) changed his name to Franky (フランキー, Furankī) and is taken in as an apprentice by shipwright Tom, who built Pirate King Gol D Roger's ship, the Oro Jackson, and also secretly holds the plans for a devastating ancient weapon.[ch. 344, 354, 427] Franky's recklessness eventually provides an opportunity for World Government agents seeking these plans.[ch. 356] Attempting to rescue his master, Franky suffers severe injuries and only survives by rebuilding parts of his body using pieces of scrap metal, turning himself into a cola-powered cyborg with strength.[ch. 336, 339, 352, 357f.] After gaining notoriety as "Cyborg" Franky (サイボーグフランキー, Saibōgu Furankī), and to fulfill his dream of sailing a ship he built around the world, he constructs the Thousand Sunny, a brigantine-rigged sloop-of-war, for the Straw Hat Pirates and joins the crew.[ch. 435–437]

In the anime television series, his voice actor is Kazuki Yao. He was substituted by Wataru Takagi for episode 1,122 in 2024, due to Yao's poor health. Patrick Seitz provides his voice in the Funimation English adaptation.