The 1973 FIBA Korać Cup was the second edition of FIBA's competition, running from 9 January to 27 March 1973. It was contested by 12 teams, four more than in the previous edition.

Birra Forst Cantù defeated Maes Pils in the final to become the competition's first Italian champion.

Country Teams Clubs (ranking in 1971–72 national league) Belgium 2 Maes Pils Standard Liège France 2 Berck Denain Voltaire Spain 2 CF Barcelona Filomatic Picadero Yugoslavia 2 Lokomotiva Rabotnički Greece 1 YMCA Thessaloniki Italy 1 Birra Forst Cantù Luxembourg 1 Amicale West Germany 1 Wolfenbüttel

The round of 12 were played with a round-robin system, in which every Two Game series (TGS) constituted as one game for the record.

Group A 1st leg 2nd leg Agg. YMCA Thessaloniki – Maes Pils 73–76 71–96 144–172 Lokomotiva – YMCA Thessaloniki 81–61 73–68 154–129 Maes Pils – Lokomotiva 115–92 82–87 197–179 Team Pld Pts W L PF PA PD 1. Maes Pils 2 4 2 0 369 323 +46 2. Lokomotiva 2 3 1 1 333 326 +7 3. YMCA Thessaloniki 2 2 0 2 273 326 −53

Group B 1st leg 2nd leg Agg. CF Barcelona – Amicale 87–61 cancelled 87–61 Amicale – Denain Voltaire 62–69 66–87 128–156 Denain Voltaire – CF Barcelona 73–61 67–81 140–142 Team Pld Pts W L PF PA PD 1. CF Barcelona 2 4 2 0 229 198 +31 2. Denain Voltaire 2 3 1 1 293 270 +23 3. Amicale 2 2 0 2 189 243 −54

Group C 1st leg 2nd leg Agg. Berck – Birra Forst Cantù 85–75 67–78 152–153 Standard Liège – Berck 87–90 75–100 162–190 Birra Forst Cantù – Standard Liège 90–56 106–93 196–149 Team Pld Pts W L PF PA PD 1. Birra Forst Cantù 2 4 2 0 349 301 +48 2. Berck 2 3 1 1 342 315 +27 3. Standard Liège 2 2 0 2 311 386 −75

Group D 1st leg 2nd leg Agg. Wolfenbüttel – Filomatic Picadero 60–58 52–71 112–129 Team Pld Pts W L PF PA PD 1. Filomatic Picadero 2 4 1 1 129 112 +17 2. Wolfenbüttel 2 2 1 1 112 129 −17 3. Rabotnički* 0 0 0 0 0 0 0 *Rabotnički originally drawn this group, withdrew before the competition.

Team 1	Agg.Tooltip Aggregate score	Team 2	1st leg	2nd leg
Maes Pils	177–169	CF Barcelona	99–87	78–82
Filomatic Picadero	163–194	Birra Forst Cantù	81–82	82–112

Team 1	Agg.Tooltip Aggregate score	Team 2	1st leg	2nd leg
Birra Forst Cantù	191–169	Maes Pils	106–75	85–94

1973 FIBA Korać Cup Champions
Birra Forst Cantù 1st title

• Linguasport 1973 FIBA Korać Cup^[usurped]
• 1973 FIBA Korać Cup