Barton made her debut for the
Wales women's national football team in 2012 against Portugal. Barton was named in the Wales squad for the
2016 Cyprus Women's Cup. She scored against
Finland in the 2016 Cyprus Women's Cup on 2 March 2016, scoring in the 34th minute. Barton was named in the Wales squad for the
2018 Cyprus Women's Cup as a centre-forward. Wales manager
Jayne Ludlow moved Barton from her usual position as a defender to play as a centre-forward for a match against
Finland, in which she scored. On 19 October 2024, Barton was called up to the Wales side for European qualifying play offs. Kayleigh currently has 86 caps, scoring 22 goals in her career. In June 2025, Barton was named in Wales' squad for
UEFA Women's Euro 2025. Following the euros, Barton retired from both club and international football with 89 appearances and 22 goals. ==Coaching career==