Gil (ギル, Giru), also translated as GP, Gold, and G, is the currency in all of the Final Fantasy games. According to Final Fantasy IV, the gil is named after the Gilbart family of Damcyan.

Gil is almost never seen in-game. Usually, the only time gil is seen is when using the Gil Toss command. The currency is predominantly circulated in coins of varying value. The only mention of paper gil in the series is in Final Fantasy Tactics A2: Grimoire of the Rift, where Luso delivers a letter containing several gil notes.

In Final Fantasy X, gil coins come in several colors (and presumably metals), and each bears an image on one side and the value of the coin on the other. In Final Fantasy VI and Final Fantasy VII, gil appears as silver coins with a hole through the middle, while in Final Fantasy V gil coins are gold with a hole. In Final Fantasy XII, Penelo can briefly be seen holding a pair of coins presumed to be gil, one silver and one gold, with unclear detailed markings on them.

This suggests that gil is loosely based on the Japanese yen (円) or ancient Chinese coins, with Final Fantasy X's gil coins appearing very similar to yen coins. The yen, along with other Chinese and Japanese currencies, such as the mon, have holes in some of the coins, a trait dating back to feudal times when coins were carried on string.