The Triple Crown is a term in European professional club basketball that refers to a club winning their country's top-tier level national domestic league, primary national domestic cup, and the top-tier level European-wide continental competition (EuroLeague) in the same season. It is the highest accomplishment that a European basketball club can achieve during a season. Only 12 European basketball clubs have achieved the Triple Crown, on 22 different occasions.
In addition, five European basketball clubs have won their top-tier level national domestic league, their top-tier level national domestic cup, and the 2nd-tier level European-wide competition (FIBA European Cup Winner's Cup / FIBA European Cup, or EuroCup) in the same season – the so-called, "Small Triple Crown".
Seven clubs, on eight different occasions, have won their top-tier level national domestic league, their top-tier level national domestic cup, and the 3rd-tier level European-wide competition (FIBA Korać Cup or FIBA EuroChallenge), or the 4th-tier level FIBA EuroCup Challenge / FIBA Europe Cup, in the same season.