Cathy Gilliat-Smith (born 19 March 1981 in Sevenoaks, Kent) is an English field hockey player forward. She was selected for the England Women's U21 squad to play in the Junior Nations Cup in 2002 European Junior (Women) Nations Cup in Jaen, Spain. She was a member of the England U21 squad that toured South Africa in early 2001. She made her senior international debut for the England women's national field hockey team in 2002. With the English team at the Eurohockey Nations Championships she won bronze medals twice: in Dublin she in 2005 and in Manchester in 2007. She was also in the squad that won a bronze medal in the 2006 Melbourne Commonwealth Games. She is retired from international hockey.
She currently plays hockey in the England national league for Sevenoaks Hockey Club in the Investec Women's Conference East League where she is player/coach of the ladies' 1st team. She has played for a number of top English national league clubs including Loughborough Students, Chelmsford and Canterbury.
She attended Tonbridge Grammar School between 1992 and 2000. She then attended Loughborough University, graduating with a degree in sports science in 2004.
In November 2011 she gave birth to twins, a boy and a girl, and remarkably returned to playing hockey only about 4 months later for Sevenoaks in the England national league in early 2012.
She is a qualified teacher and currently a full-time teacher at Sevenoaks School in Kent. She is the assistant to the Housemaster of Johnsons House and teaches PE and Design as well as tutoring the Middle School boys of Johnsons.