Rosalyn 'Roz' H. Baker (born September 20, 1946 in El Campo, Texas) is an American politician and a Democratic member of the Hawaii Senate since January 16, 2013 representing District 6. Baker served consecutively from 2003 until 2013 in the District 5 seat, and previously served from 1993 until 1999, having served consecutively in the Hawaii State Legislature from 1989 until 1993 in the Hawaii House of Representatives.