CTBC Flying Oyster (CFO) is a Taiwanese professional League of Legends team competing in the League of Legends Championship Pacific (LCP), the game's top-level league in the Asia–Pacific. It previously competed in the Pacific Championship Series (PCS) and has four domestic titles, three from the LCP and one from the PCS. The team is owned by CTBC Sports Entertainment, a subsidiary of CTBC Bank.
CFO has made an appearance at all three international tournaments hosted by Riot Games, the developer of League of Legends. The team's best finish was at the 2025 First Stand Tournament, where they placed third to fourth overall after being knocked out in the semifinals.