Template:2011-12 in international water polo

v t e 2011–12 in international water polo
September	Four Nations (women) GBR Women's European Championship Qualifiers: Matchday 5
October	Pan American Games (men) MEX Pan American Games (women) MEX Men's European Championship Qualifiers: Playoffs Women's European Championship Qualifiers: Matchday 6
November	Men's World League: Europe Matchday 1
December	Men's World League: Europe Matchday 2 Canada Cup (women) CAN Tom Hoad Cup (men) AUS
January	Men's World League: Europe Matchday 3 Mithat Hantal Trophy (men) TUR Volvo Cup (men) HUN Samartzidis Cup (men) GRE Thetis Cup (women) GRE Pan-Pacific Championships AUS European Championships (men) NED European Championships (women) NED Asian Championship JPN
February	Holiday Cup (women) USA Men's World League: Europe Matchday 4 Women's World League: Americas USA
March	Men's World League: Europe Matchdays 5 and 6 South American Championships BRA Four Nations (men) USA Six Nations (men) CZE Kirishi Cup (women) RUS
April	Olympic Games Qualification Tournament (men) CAN Olympic Games Qualification Tournament (women) ITA
May	Water Polo Olympic Test Event (women) GBR Men's World League: Americas USA Men's World League: Asia/Oceania CHN JPN Women's World League: Asia/Oceania CHN JPN Women's World League: Europe GRE ITA Men's World League: Asia/Oceania CHN JPN Women's World League: Super Final CHN
June	Men's World League: Super Final KAZ Women's World League: Super Final CHN
July–August	Olympic Games GBR