The 2008–09 Duke Blue Devils women's basketball team represented Duke University in the 2008–09 NCAA Division I basketball season. The Blue Devils were coached by Joanne P. McCallie, (also known as Coach P) and the Blue Devils played their home games at Cameron Indoor Stadium in Durham, North Carolina. The Blue Devils are a member of the Atlantic Coast Conference. The Blue Devils reached the 25-win mark for the 11th straight season, collected their 12th straight 10-win ACC season. McCallie guided Duke to a 14-0 record at home in Cameron Indoor Stadium marking only the second time in school history the Blue Devils have gone undefeated at home. Duke was also a No. 1 seed in the NCAA Tournament for the seventh time in school history and the third time out of the last four years.