The 1981 FIBA Club World Cup was the 15th edition of the FIBA Intercontinental Cup for men's basketball clubs. It was the first edition of the competition that was held under the name of FIBA Club World Cup. It took place at São Paulo, Brazil.

Continent	Teams	Clubs
South America	4	Ferro Carril Oeste	Sírio	Guaiqueríes de Margarita	Atlética Francana
Europe	2	Maccabi Elite	Real Madrid
Africa	1	ASFA
Asia	1	Bayi Rockets
North America	1	Clemson Tigers
Oceania	1	St. Kilda Saints

• 1981 edition^[usurped]

Group A Team Pld Pts W L PF PA 1. Real Madrid 4 8 4 0 416 360 2. Sírio 4 7 3 1 435 369 3. Clemson Tigers 4 6 2 2 416 406 4. Bayi Rockets 4 5 1 3 352 429 5. Guaiqueríes de Margarita 4 4 0 4 397 452 Day 1, June 26, 1981 Team 1  Score  Team 2 Real Madrid 115–109 Clemson Tigers Bayi Rockets 82–114 Sírio Day 2, June 27, 1981 Team 1  Score  Team 2 Real Madrid 107–71 Bayi Rockets Guaiqueríes de Margarita 100–131 Sírio Day 3, June 28, 1981 Team 1  Score  Team 2 Clemson Tigers 101–91 Bayi Rockets Guaiqueríes de Margarita 92–102 Real Madrid Day 4, June 29, 1981 Team 1  Score  Team 2 Clemson Tigers 111–98 Guaiqueríes de Margarita Sírio 88–92 Real Madrid Day 5, June 30, 1981 Team 1  Score  Team 2 Bayi Rockets 108–107 Guaiqueríes de Margarita Sírio 102–95 Clemson Tigers

Group B Team Pld Pts W L PF PA 1. Atlética Francana 4 8 4 0 365 306 2. Ferro Carril Oeste 4 7 3 1 363 320 3. St. Kilda Saints 4 6 2 2 367 381 4. Maccabi Elite 4 5 1 3 372 348 5. ASFA 4 4 0 4 235 387 Day 1, June 26, 1981 Team 1  Score  Team 2 Maccabi Elite 96–63 ASFA Atlética Francana 90–75 Ferro Carril Oeste Day 2, June 27, 1981 Team 1  Score  Team 2 Maccabi Elite 82–87 Atlética Francana St. Kilda Saints 86–100 Ferro Carril Oeste Day 3, June 28, 1981 Team 1  Score  Team 2 ASFA 60–89 Atlética Francana St. Kilda Saints 100–97 Maccabi Elite Day 4, June 29, 1981 Team 1  Score  Team 2 ASFA 65–112 St. Kilda Saints Ferro Carril Oeste 98–97 Maccabi Elite Day 5, June 30, 1981 Team 1  Score  Team 2 Atlética Francana 99–89 St. Kilda Saints Ferro Carril Oeste 90–47 ASFA

	Team	Pld	Pts	W	L	PF	PA
7.	Maccabi Elite	3	5	2	1	299	246
8.	Guaiqueríes de Margarita	3	5	2	1	284	259
9.	Bayi Rockets	3	5	2	1	288	284
10.	ASFA	3	3	0	3	188	270

Note: The individual scores in the League stage are accumulated.

Day 1, July 2, 1981

Team 1	Score	Team 2
Guaiqueríes de Margarita	82–57	ASFA
Bayi Rockets	88–109	Maccabi Elite

Day 2, July 3, 1981

Team 1	Score	Team 2
ASFA	68–92	Bayi Rockets
Guaiqueríes de Margarita	95–94	Maccabi Elite

	Team	Pld	Pts	W	L	PF	PA
1.	Real Madrid	5	10	5	0	561	460
2.	Sírio	5	9	4	1	484	458
3.	Clemson Tigers	5	8	3	2	507	506
4.	Atlética Francana	5	7	2	3	411	441
5.	Ferro Carril Oeste	5	6	1	4	464	490
6.	St. Kilda Saints	5	5	0	5	487	559

Note: The individual scores in the League stage are accumulated.

Day 1, July 2, 1981

Team 1	Score	Team 2
Real Madrid	115–100	Ferro Carril Oeste
Clemson Tigers	111–107	St. Kilda Saints
Sírio	87–77	Atlética Francana

Day 2, July 3, 1981

Team 1	Score	Team 2
Ferro Carril Oeste	97–103	Clemson Tigers
Real Madrid	101–60	Atlética Francana
Sírio	111–102	St. Kilda Saints

Day 3, July 4, 1981

Team 1	Score	Team 2
Atlética Francana	85–89	Clemson Tigers
Real Madrid	138–103	St. Kilda Saints
Sírio	96–92	Ferro Carril Oeste

July 5, 1981

Team 1	Score	Team 2
Clemson Tigers	79–73	Atlética Francana

July 5, 1981

Team 1	Score	Team 2
Real Madrid	109–83	Sírio

1981 Intercontinental Champions
Real Madrid 4th title

	Team
	Real Madrid
	Sírio
	Clemson Tigers
4.	Atlética Francana
5.	Ferro Carril Oeste
6.	St. Kilda Saints
7.	Maccabi Elite
8.	Guaiqueríes de Margarita
9.	Bayi Rockets
10.	ASFA

• 1981 World Cup for Champion Clubs^[usurped]