Ionikos Nikaias was founded in 1965, after the merger of the two former clubs of
Nikaia (in those years called Kokkinia), Aris Piraeus and A.E. Nikaia. The first departments of the club were the football and the basketball teams. These are the most successful departments of the club so far. The football team has played in the
Super League (1st-tier) many times, and it has reached a final of the
Greek Cup. It has also played in the
UEFA Cup one time. The basketball team of Ionikos, was also founded in 1965. The most important period of the club was the late 1970s and early 1980s, when the club played in the top-tier level
Greek Basket League. Ionikos had notable players, such as
Panagiotis Giannakis, and it played two times in the
FIBA Korać Cup. Ionikos also had a notable volleyball team, that had a presence in
A1 Ethniki Volleyball. This team was merged with Aris Nikaias in 2001, and formed the team of
A.E. Nikaia. The successor of Ionikos achieved a win of the
Greek Volleyball Cup in 2003. The water polo team of Ionikos plays in
A2 Ethniki Water Polo. ==Honours==