Kyriakos "Koulis" Iosifidis (Greek: Κυριάκος Ιωσηφίδης, born 27 January 1946 in Piraeus) is a retired Greek water polo player and water polo coach. As a player, he was part of the Greece men's national water polo team at the 1968 and 1972 Olympic Games.and ethnikos Piraeus. Iosifidis was the head coach of Greece women's national water polo team that won the silver medal at the 2004 Summer Olympics in Athens.