| Personal information | |
|---|---|
| Birth name | Glenda Joy Stirling |
| Born | 7 July 1952 Auckland, New Zealand |
| Height | 1.68 m (5 ft 6 in) |
| Weight | 65 kg (143 lb) |
| Spouse | Jack Edward Biddle |
| Relative(s) | Ivor Stirling (father) Ken Stirling (brother) Lorrie Hunter (grandfather) |
| Sport | |
| Country | New Zealand |
| Sport | Swimming |
Glenda Joy Stirling (married name Biddle, born 7 July 1952) is a former New Zealand swimmer who represented her country at the 1968 Summer Olympics and 1970 British Commonwealth Games.