Konstantinos "Dinos" Nikolopoulos (; born 30 November 1993) is a Greek professional footballer who plays as a left back for Gamma Ethniki club GS Diagoras.
He started his career in 2010âÂÂ11 season from Olympiakos Lampetiou, an amateur football club in Labeti, Pyrgos, Greece. In July 2011, he was moved to Paniliakos youth ranks. He promoted to the first team on July 7, 2011 at the age of 18. At Paniliakos he made 13 appearances, scoring 1 goal. On August 18, 2012 he moved to AEK Athens to play both for U20 and the first team.