James Iha is a Japanese American rock musician. He is best known as former guitarist and co-founder of the alternative rock band The Smashing Pumpkins.

Among his musical projects of recent years, Iha has been a permanent fixture of A Perfect Circle. He was most recently a member of Tinted Windows, a 1960s/1970s inspired group with members of Cheap Trick, Fountains of Wayne, and Hanson.