2015–16 LEN Champions League

The 2015–16 LEN Champions League was the 53rd edition of LEN's premier competition for men's water polo clubs. It ran from 4 September 2015 to 4 June 2016, and was contested by 27 teams from 13 countries. The Final Six (quarterfinals, semifinals, final, and third place game) took place on 2, 3 & 4 June in Budapest.

Team allocation
8 teams are directly qualified for the preliminary round.

Round and draw dates
The schedule of the competition is as follows.

Qualification I
Twelve teams took part in the Qualification round I. They were drawn into three groups of four teams, whose played on 4–6 September 2015. Top 3 teams of each group advance to qualification round II.
 * 4-6 September

Group A
Tournament was played in Herceg Novi, Montenegro.

Group B
Tournament was played in Valletta, Malta.

Group C
Tournament was played in Tbilisi, Georgia.

Qualification II
Sixteen teams took part in the Qualification round II. Nine teams from first round and seven teams with wild cards. These clubs formed four groups of four and had round robin tournaments at four host cities on 18–20 October. Top 2 of these groups advance to play-off (qualification round 3).
 * 18–20 September

Group D
Tournament was played in Athens, Greece.

Group E
Tournament was played in Hannover, Germany.

Group F
Tournament was played in Rijeka, Croatia.

Group G
Tournament was played in Busto Arsizio, Italy.

Qualification III

 * 3 October 2015: 1st match
 * 17 October 2015: 2nd match

Eight teams took part in the Qualification round III. These teams played against each other over two legs on a home-and-away basis. The mechanism of the draws for each round was as follow: The first legs were played on 3 October, and the second legs were played on 17 October 2015.
 * In the draw for the Qualification round III, the four group winners were seeded, and the four group runners-up were unseeded. The seeded teams were drawn against the unseeded teams, with the seeded teams hosting the second leg. Teams from the same group could not be drawn against each other.

Preliminary round
Main article: 2015–16 LEN Champions League preliminary round

The regular season was played between 28 October 2015 and 18 May 2016. If teams are level on record at the end of the preliminary round, tiebreakers are applied in the following order:


 * 1) Head-to-head record.
 * 2) Head-to-head point differential.
 * 3) Point differential during the Regular Season.
 * 4) Points scored during the regular season.
 * 5) Sum of quotients of points scored and points allowed in each Regular Season match.

In each group, teams played against each other home-and-away in a round-robin format. The matchdays were 28 October, 11 November, 28 November, 16 December 2015, 3 February, 10 February, 30 March, 16 April, 30 April, and 18 May 2016. The top three teams advanced to the final six.

The Final Six (quarterfinals, semifinals, third place game and final) were played in Budapest, Hungary from 2 to 4 June 2016.

Final Six
Hajós Alfréd Nemzeti Sportuszoda, Budapest, Hungary