Natalie Marie Grinham is an Australian former professional squash player. During her career, she has won three Commonwealth Games Gold Medals, and finished runner-up at both the World Open and the British Open. She reached the World No. 2 ranking in 2007. She represented Australia in international squash competitions up to 2006. She is married to the Dutch squash player Tommy Berden, and took up Dutch citizenship in February 2008. Both Tommy and Natalie became the first husband and wife team to win a joint championship in squash after winning the respective trophies at the inaugural edition of the Tranzparanz Open in June 2006 which was held in Almere, Netherlands.

Rachael Margaret Grinham is an Australian former professional squash player. She won the World Open in 2007, and the British Open in 2003, 2004, 2007 and 2009. She reached the World No. 1 ranking in August 2004 and held it for 16 consecutive months.