Finley is both a surname and given name. Its meaning is of Scottish origin, from the Gaelic personal name Fionnlagh (Old Irish Findlaech), composed of the elements fionn "white", "fair" (see Finn) + laoch "warrior", "hero", which led many people believe that has been reinforced by an Old Norse personal name composed of the elements finn "Finn" + leikr "fight", "battle", "hero". Finley is a popular given name both in the United States and the United Kingdom. It is in use for both boys and girls in the United States. It has been more common for boys than girls in the United Kingdom.