Katherine Elizabeth "Kat" Merchant (born 29 October 1985) is an English female rugby union player who represented her country 58 times and scored 44 tries.

She graduated from Birmingham University in Sport and Exercise Science in 2007.

[1] She was playing for Worcester when she began her nine-year international career during the 2005 Six Nations.

[4] She was a member of the squad to the 2013 Rugby World Cup Sevens[5] She announced her retirement in September 2014 with immediate effect on medical grounds, as she had taken a number of concussions.

[6] As of September 2021[update] she was a personal trainer,[7] and coach of Old Streetonians Rugby Club in central London.