Donna Guy-Halkyard (née Guy; born 1 November 1961) is a New Zealand former judoka, who won a bronze medal at the 1986 World Judo Championships, and won a silver medal at the 1990 Commonwealth Games.

[1] At the 1986 World Judo Championships, Guy won a bronze medal in the under 61 kg event.

[1] In the same year, Guy came second at the judo demonstration event at the 1986 Commonwealth Games in Edinburgh, Scotland, losing in the final to Diane Bell.

[1][2] Guy also competed for New Zealand at the 1988 Summer Olympics in Seoul, South Korea.

[1] At the 1990 Commonwealth Games in Auckland, New Zealand, Guy-Halkyard came second in the under 61 kg event,[3] losing to Briton Diane Bell in the final.