| Glenda Biddle | |
| Birth Name: | Glenda Joy Stirling |
| Birth Date: | 7 July 1952 |
| Birth Place: | Auckland, New Zealand |
| Spouse: | Jack Edward Biddle |
| Height: | 1.680NaN0 |
| Weight: | 65kg (143lb) |
| Relatives: | Ivor Stirling (father) Ken Stirling (brother) Lorrie Hunter (grandfather) |
| 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.
Stirling was born in Auckland on 7 July 1952. Her father was Ivor Gerald Stirling and her mother was Joyce Agnes Stirling (née Hunter), a daughter of politician Lorrie Hunter.[1] She married Jack Edward Biddle, and the couple went on to have five children.[2] Her brother, Ken, was a New Zealand rugby league international, as was her father.
Stirling competed in three events at the 1968 Summer Olympics, reaching the final and finishing eighth in the 100 m backstroke. She also competed in the 200 m backstroke and medlay relay, but did not progress beyond the heats.[3] At the 1970 British Commonwealth Games in Edinburgh, she competed in the same three events, finishing fourth in both the 100 m backstroke and medlay relay, and sixth in the 200 m backstroke.[4]