Janice Waddy (born 1958) is a former netball player from New Zealand, who represented the national team on six occasions and won a gold medal at the 1979 Netball World Championships.

She went to school at St Margaret's College in Christchurch, in the Canterbury region of the South Island of New Zealand.

Playing as Janice Henderson, she took part in the 1979 World Championships, held in Port of Spain, Trinidad and Tobago, which resulted in a three-way tie for first place between, New Zealand, Australia and the hosts.

From 2001 to 2008 she worked for the Australian Sports Commission in Canberra, before joining the commission's parent organisation, the Department of Health, working on the department's involvement with major sporting events.

She later moved to the Department of Infrastructure and Regional Development, to work on a capacity-building project for Papua New Guinea.