Boniek first played at Zawisza Bydgoszcz and later at Widzew Łódź. He transferred to Italian football giants Juventus in 1982. With Juventus he won the Cup Winners' Cup and the European Super Cup in 1984 (scoring in the final of the former) and the European Cup in 1985. After finishing his professional career at Roma in 1988, he had a successful business career.As a player, Boniek was known for his blistering pace and acceleration. He was one of the best dribblers of his time and also displayed superb technique. The Juventus president Gianni Agnelli nicknamed him Bello di notte ("Beauty at night", which is a play on the title of the Buñuel movie Belle de Jour) because of his performances in European club tournament matches, which were played in the evening. Boniek was named by Pelé as one of the 125 Greatest Living Footballers and by FIFA as one of the 100 best-ever players. On 12 October 2009, he received a Golden Foot career award.
Boniek represented Poland in 80 internationals and scored 24 goals. He won a bronze medal (third place) as part of the Polish team at the 1982 FIFA World Cup.
Boniek has also coached in Italy, with stints at Lecce in 1990–91, Bari in 1991–92, Sambenedettese in 1992–93, and Avellino in 1994–96.
Boniek has served as vice-president of the Polish Football Association, and in July 2002 he became the manager of Poland. He resigned in December 2002, after just five matches (2 wins, 1 draw, 2 defeats, including a 1-0 home loss against Latvia in a European Championship qualifier).
According to reports back in Poland, Boniek had been favored to become the new Minister of Sport for his country, but he denied the claims and stated that he had no intention of taking up the job.
On 26 October 2012, he became the chairman of the Polish Football Association.
