Olympiacós Sýndesmos Filáthlon Peiraiós is a major multi-sport club based in Piraeus, Greece. Olympiacos is parent to a number of different competitive departments which participate in football, basketball, volleyball, water polo, handball, athletics, swimming, table tennis and boxing amongst many others—and have won numerous European and domestic titles over the club's history.
Vladimir Vujasinović is a Serbian professional water polo head coach and former player. He currently serves as head coach of VK Novi Beograd.
Olympiacos Men's Waterpolo, commonly referred to as Olympiacos, Olympiacos Piraeus or with its full name as Olympiacos CFP, is the professional men's water polo department of the major Greek multi-sport club, Olympiacos CFP, based in Piraeus, Greece. The department was founded in 1925, one of the founding members of the Hellenic Swimming Federation, and their home ground is the Papastrateio Pool in Piraeus.
Slobodan Soro is a Serbian-born Brazilian water polo goalkeeper.
Filip Filipović is a Serbian professional water polo player widely considered to be one of the greatest players in the history of the sport. He was a member of the Serbia men's national water polo teams that won bronze medals at the 2008 and 2012 Olympics and gold medals in 2016 and 2020. He also held the world title in 2009 and 2015 and the European title in 2003, 2006, 2012, 2014, 2016 and 2018. He was named Most Valuable Player at the 2011 World Championships. He was also voted as the male water polo "World Player of the Year" in 2009, 2011, 2014 and 2021 by the FINA magazine. He played for Pro Recco in Italy and won three LEN Champions League and three LEN Super Cup with them. Currently, he plays for Novi Beograd.
Andrija Prlainović is a Serbian professional water polo player widely regarded as one of the greatest players ever. He was a member of the Serbia men's national water polo teams that won bronze medals at the 2008 and 2012 Olympics and gold medals in 2016 and 2020. He also held the world title in 2009 and 2015 and the European title in 2006, 2012, 2014, 2016 and 2018. In 2011, he won the LEN Euroleague with VK Partizan and in 2013 with Red Star Belgrade, where he was one of the best scorers.
Ethnikos Piraeus Water Polo Club is the professional water polo team of Ethnikos OFPF.
NO Vouliagmeni or "NOV" is a major aquatic sports club, founded by local sportsmen in 1937 in the seaside resort of Vouliagmeni, Athens, Greece. The club is located on the eastern edge of the Mikro Kavouri peninsula, adjacent to the Astir Palace Hotel and overlooking the bay, town and lake of Vouliagmeni.
Stefan Mitrović is a Serbian water polo center back for Partizan. He was a member of the Serbia men's national water polo teams that won a bronze medal at the 2012 Olympics and gold medals in 2016 and 2020. He was pulled out of the 2008 Beijing Olympics team after suffering injuries in a motorcycle accident. He won the world title in 2009 and 2015 and the European title in 2012, 2014, 2016 and 2018.
Miloš Ćuk is a Serbian water polo player who plays for Radnički. His most notable achievement with the Serbia national water polo team are the golden medal from the 2012 European Championship held in Eindhoven and the silver medal from the 2011 World Championship in Shanghai. In 2011, he won with Partizan Raiffeisen the National Championship and National Cup of Serbia, LEN Euroleague, LEN Supercup and Eurointer League.
Milan Aleksić is a Serbian water polo center back who plays for Partizan and the Serbia men's national water polo team. He is a 2016 and 2020 Olympic champion and a 2012 Olympic bronze medalist. He also held the world title in 2009 and 2015 and European title in 2012, 2014 and 2016. His most notable achievements in a club competition are the LEN Euroleague and the LEN Supercup which he won in 2011 with Partizan Raiffeisen.
Club Natació Sabadell is a Spanish aquatic sports club from Sabadell.
Shturm-2002 Moskovskaya Oblast, a.k.a. Shturm Ruza, is a Russian water polo club. Founded in 2002 in Chekhov, Moscow Oblast, in 2010 it was relocated to Ruza, also in the Moscow Oblast.
The LEN Women's Champions League, formerly known as LEN European Cup, LEN Champions Cup and LEN Euroleague Women, is the premier competition for women's water polo clubs of Europe and takes place every year. It is organized by the Ligue Européenne de Natation (LEN) and was created in 1987 as LEN European Cup.
Giuseppe "Pino" Porzio is a coach and a former Italian water polo player. He is one of the most titled European coaches of all time, and, as his list of prizes demonstrates, is one of the most winning sportsmen among Italian athletes. He has won, both as a player and as a coach, 43 titles including: Olympics, World Cup, European Championships, World Championships, 2 Mediterranean Games, 7 Champions League, 3 European Super Cup, Adriatic League 1, 2 Comen Cup, 16 League titles, 7 Italian Championships.
Felipe Perrone Rocha is a Spanish-Brazilian water polo player. He competed for Spain from 2003 until 2013, including in the 2008 Summer Olympics and 2012 Summer Olympics. Afterwards he competed for his birth country in the 2016 Summer Olympics, as Brazil earned its first qualifying spot in 32 years as hosts. He helped Spanish water polo club CN Atlètic-Barceloneta win the LEN Champions League in 2013–14 season. His brother Ricardo Perrone also competed for Spain in water polo.
The Greek Women's Water Polo A1 League is the premier championship for women's water polo teams in Greece. It was founded in 1988, and it is currently contested by twelve teams. Greek League is ranked as one of the top national domestic leagues in European water polo. The champion, the runner-up and the third-placed team qualify for the LEN Euro League.
Olympiacos Women's Water Polo Club is the women's water polo department of the major Greek multi-sport club Olympiacos, based in Piraeus. The department was founded in 1988 and they play their games at the 1000-seated Papastrateio "Petros Kapagerof" Pool in Piraeus.
Alkisti Avramidou is a female Greek former water polo player.
The Piraeus derby, is an association football and water polo rivalry between Ethnikos Piraeus and Olympiacos, the 2 teams representing the city of Piraeus.
Olympiacos 
