Kelsie Thwaites (née Wills; born 8 January 1993) is a New Zealand rugby union player.

[1] Thwaites completed an indoor volleyball scholarship in the United States, and played professionally in Paris.

[2][3] The pair won a bronze medal at the Ulsan Open in South Korea on the 2017 FIVB Beach Volleyball World Tour.

[1] She made the Bay of Plenty Volcanix squad in her debut year for the Farah Palmer Cup.

[6][2] Thwaites was named in the Chiefs Manawa squad for the 2023 Super Rugby Aupiki season.