In European professional club basketball, the Triple Crown refers to a club winning their country's top-tier level national domestic league, their county's primary national domestic cup, and the top-tier level European-wide continental competition, which is the EuroLeague, all in the same season.
It is the highest accomplishment that a European professional basketball club can achieve during a season.
To date, only a total of 12 different European basketball clubs have managed to achieve winning the European Basketball Triple Crown, in a total of 22 occasions.
In addition, five European professional basketball clubs have won their top-tier level national domestic league, their top-tier level national domestic cup, and one of the 2nd-tier level European-wide competitions (FIBA European Cup Winner's Cup / FIBA European Cup / EuroCup / FIBA Champions League) in the same season – the so-called, "Small European Triple Crown".
Seven pro European basketball clubs, on eight different occasions, have won their top-tier level national domestic league, their top-tier level national domestic cup, and one of the 3rd-tier level European-wide competitions (FIBA Korać Cup / FIBA EuroChallenge), or one of the 4th-tier level European-wide competitions (Original FIBA Europe Cup / Second FIBA Europe Cup), in the same season.