Kerstin Casparij

First spell at Heerenveen

Casparij made her debut for Heerenveen in the Eredivisie at the age of 15. She made her league debut against Twente on 6 November 2015. Casparij scored her first league goal against Achilles '29 on 23 December 2016, scoring in the 65th minute.

VV Alkmaar

After two years, she moved to VV Alkmaar. She made her league debut against Heerenveen on 1 September 2017. She scored her first league goal against Excelsior on 10 November 2017, scoring in the 45th minute.

Heerenveen (second stint)

After a year at VV Alkmaar, she returned to Heerenveen. During her second spell, she made her league debut against Achilles '29 on 14 September 2018. She scored a hat trick, which was also her first goals for the club during her second spell, against Achilles '29 on 27 November 2018.

Twente

She joined Twente in 2020. Casparij made her league debut against Ajax on 6 September 2020. She scored her first league goal against PEC Zwolle on 11 September 2020, scoring in the 82nd minute.

Manchester City

On 26 July 2022, Casparij joined Women's Super League club Manchester City on a three-year deal. She was signed to replace Lucy Bronze. Casparij made her league debut against Chelsea on 25 September 2022. Along with Rico Lewis, Casparij was named as the club's PFA Community Champions on 24 May 2024. Casparij scored and was named player of the match in a 3–0 derby win over Manchester United in the WSL on 28 March 2026.

Casparij has played for Netherlands youth teams in several age groups. She made her senior team debut on 22 October 2021 as an 83rd-minute substitute for Daniëlle van de Donk in a 8–0 win against Cyprus. On 31 May 2023, she was named as part of the Netherlands provisional squad for the 2023 FIFA Women's World Cup.

Club

As of match played 26 September 2026

International

As of match played 9 June 2026

Casparij is queer and a lesbian. As of 2025, she is dating Ruth Brown, a woman who she met on Tinder and does not work in football. Casparij is supportive of trans people, dedicating her goal in the 20 April 2025 match against Everton to "all my trans siblings, who’ve had an incredibly tough & heartbreaking week", in the wake of the UK Supreme Court judgement in For Women Scotland Ltd v The Scottish Ministers. In September 2025, she became a patron of the LGBT Foundation and will help with fundraising for safe spaces for queer women in the community.