A Welsh name of Greek and Hebrew origin.

From the name Iefan, which was a Welsh form of the name John.

Alternative forms of the name are: Ivan, Ifan, Iwan, Ivo, João, Johan, Yannis, Giovanni, Ivano, Jovan, Jan, Yan, Jake, Jack, Jean, Hans.

Famous bearers are Evan Williams, Evan Spiegel, Evan Ross, Evan Handler, Evan Peters, Evan Lysacek, Evan Dando, Evan Ellingson.