Leilani Joyce (born 15 April 1974, Hamilton, New Zealand) is a former World No. 1 professional squash player from New Zealand. During her career, she won the British Open in 1999 and 2000, and finished runner-up at the World Open in 2000 and 2001.
In the early part of her career she was known as Leilani Marsh and competed in the 1996 World Open as the number 14 seed under that name.
During a 12-year career on the international tour, Joyce won 16 WISPA titles. She also won four New Zealand national titles. She was named "Maori Sports Person of the Year" twice, and "New Zealand Sportswoman of the Year" once.
As a junior player, Joyce won the New Zealand under-13, under-15, under-17 and under-19 championships, the Australian under-17 and under-19 championship, and the Oceania under-19 championship.
Joyce retired from the professional tour in 2002, after winning gold medals in both the women's doubles and mixed doubles at the Commonwealth Games.