This article describes the group stage of the 2015–16 LEN Champions League.

12 teams were drawn into two groups of six teams, where they play each other twice. The top fthree teams will advance to the final six.

The matchdays are 28 October, 11 November, 28 November, 16 December 2015 and 3 February, 10 February, 12 March, 16 April, 30 April and 18 May 2016.

Pos	Team	Pld	W	D	L	PF	PA	PD	Pts	Qualification
1	Atlètic-Barceloneta	4	2	1	1	36	30	+6	7	Advance to semifinals
2	Primorje	4	2	1	1	32	32	0	7	Advance to quarter-finals
3	Olympiacos	4	1	3	0	33	30	+3	6
4	Eger	4	1	2	1	32	32	0	5	Eliminated
5	Spandau 04	4	0	3	1	36	38	−2	3
6	Jadran Herceg Novi	4	0	2	2	39	46	−7	2

Pos	Team	Pld	W	D	L	PF	PA	PD	Pts	Qualification
1	Pro Recco	4	4	0	0	56	20	+36	12	Advance to semifinals
2	Szolnoki Dózsa	4	3	0	1	45	33	+12	9	Advance to quarter-finals
3	Jug Dubrovnik	4	3	0	1	41	40	+1	9
4	Partizan	4	2	0	2	26	41	−15	6	Eliminated
5	OSC Budapest	4	0	0	4	25	34	−9	0
6	Galatasaray	4	0	0	4	29	54	−25	0

16 December 20:00	Report	Galatasaray	7–14	Szolnoki Dózsa	„Engin Bora” Havuzu, Istanbul Referees: Stavropulos (GRE), Voevodin (RUS)
		Score by quarters: 3–5, 3–3, 1–2, 0–4
		Nikić 2	Goals	Dé. Varga 6

16 December 20:00	Report	Partizan	5–4	OSC Budapest	SC Banjica, Belgrade Referees: Racine (LEN), Koganov (AZE)
		Score by quarters: 1–1, 2–0, 1–0, 1–3
		Stojanović 2	Goals	Decker 2

16 December 20:45	Report	Pro Recco	14–6	Jug Dubrovnik	Piscina Comunale, Sori Referees: Margeta (SLO), Naumov (RUS)
		Score by quarters: 1–1, 5–2, 3–1, 5–2
		Mandić 3	Goals	Perrone 3

• Official website Archived 2015-04-20 at the Wayback Machine