The France international, who came off the bench for extra time in PSG's 4-3 penalty shootout triumph after a 1-1 draw against Arsenal at the Puskas Arena, lifted the trophy for the second straight season at the age of 20 years and two months.
Zaire-Emery had already featured briefly in last year's crushing 5-0 victory over Inter Milan and now surpasses former Ajax Amsterdam midfielder Johan Neeskens, who was 20 years and eight months old when he won his second European Cup final in the 1970s.