Iwona Bos-Swiecik (née à Âwiecik; born 24 November 1958) is a Polish and Dutch (from 1992) chess Woman International Master (1993), Dutch Women's Chess Championship winner (1993).
In 1972, Iwona Bos-Swiecik won the title of junior chess vice-champion of Poland in Szamotuà Ây. She won the second silver medal three years later in Polanica-Zdrój, while in 1976 in Toruà  she took 1st place and won the title of national champion in the under-20 category. In the same year, Iwona Bos-Swiecik made her debut in the final of the Polish Women's Chess Championships. Until 1991, she played in the final tournaments 13 times, winning bronze medals twice: in the 1981 in Poznaà  and in the 1990 in Konin. In 1987 and 1988 she took top positions in international female chess tournaments in Naà ÂÃÂczów (4th and 3rd place, respectively).
Iwona Bos-Swiecik played for Netherlands in the Women's Chess Olympiad:
Iwona Bos-Swiecik has represented the Netherlands since 1992. In 1993, she won the Dutch Women's Chess Championship, and in 1998 and 1999 she took 4th place twice in the championships. She last played in the Dutch Women's Chess Championship final in 2002.
She achieved the best rating in her career on 1 January 1991, with a score of 2245 points, she shared 3rd - 4th place (after Agnieszka Brustman and Hanna Ereà Âska-Radzewska, together with Graà ¼yna Szmacià Âska) among Polish female chess players.