Danuta Wieczorek-Szwaj (born 27 April 1949) is a Polish former professional tennis player.

Born in Pszczyna, Wieczorek grew up in the south of Poland and was a Wimbledon junior semi-finalist.

[1] Wieczorek, an eight-time national singles champion, represented Poland in the 1968 Federation Cup competition, winning two singles rubbers.

One of those wins came against Astrid Suurbeek in a World Group second round loss to the Netherlands.

In 1969 she featured in the singles and doubles mains draw of the French Open.