Katherine Westbury
Katherine "Kat" Westbury is a Thai-New Zealand tennis player.
Westbury reached her best singles ranking of world number 576 on 3 October 2011. She made her WTA tour debut at the 2015 ASB Classic, having received a wildcard into the doubles event with Rosie Cheng. They were beaten by Petra Martić and Anna Tatishvili in the first round, and it was her last professional match for five years. Apart from a Fed Cup tie in 2018, she did not play another tournament until February 2020, when she reached the semi-finals of both singles and doubles at an ITF tournament in her original home town of Hamilton, New Zealand.
Westbury has two brothers. At age of three she moved to Bangkok, Thailand with her parents where she attended pre-school and primary school. Westbury began playing tennis at the age of 6 at The British Club in Bangkok. Her family returned to New Zealand two years later, settling in Christchurch, where she attended Burnside Primary School and Cobham Intermediate School, while also playing on the Canterbury Tennis Regional Squad under coach Glenn Wilson. In 2005 the family moved to Sydney, before further re-locating to Burwood East, Victoria, where she still resides.ITF Circuit finals
Singles: 2 (0–2)
| $100,000 tournaments |
| $75,000 tournaments |
| $50,000 tournaments |
| $25,000 tournaments |
| $10,000 tournaments |
| Outcome | No. | Date | Tournament | Surface | Opponent | Score |
| Runner-up | 1. | 27 September 2010 | Jakarta, Indonesia | Hard |  Sandy Gumulya | 3–6, 0–6 |
| Runner-up | 2. | 8 July 2013 | Bangkok, Thailand | Hard |  Lu Jiajing | 7–5, 3–6, 3–6 |
