Emily Sarah Gaddum MNZM (née Naylor; born 23 December 1985) is a former New Zealand field hockey player.

[4] In 2007, after an outstanding Champions Challenge performance, she was voted Oceania Player of the Century by The ABCD Hockey Magazine.

[6] In April 2014, with 239 international caps, Naylor became the most-capped New Zealand women's hockey player, surpassing the record of Susie Muirhead.

[8][9] For the first time as Emily Gaddum—following her marriage—she was included in the squads for test matches against Canada and against multiple international sides in March and April 2016.

[13] In the 2020 Queen's Birthday Honours, Gaddum was appointed a Member of the New Zealand Order of Merit, for services to hockey.