Alex Antônio de Melo Santos, or simply Alex (born April 16, 1983), is a Brazilian former footballer who played as a left-back and left winger.
In June 2012, Alex joined Tokushima Vortis on loan from Kashima Antlers. The move was later made permanent, with Alex penning a new contract with Tokushima.
His twin brother Alan is also a professional footballer who plays for Fujieda MYFC in the Japan Football League.