Cody \c(o)-dy\ as a boy's name (also used as girl's name Cody), is pronounced KOH-dee. It is of Irish and Gaelic origin, and the meaning of Cody is "descendant of Cuidightheach". Cuidightheach was originally a byname for a helpful person. Might also mean "son of Oda". Buffalo Bill Cody, frontier scout, showman and entrepreneur, took his "Wild West Show" around America and Europe in the early 20th century.
For more information, see also the related name Coty.