Sinead Diver (/ʃɪˈneɪdˈdaɪvər/ shin-AYD-dih-ver, /ʃɪˈneɪdˈdɪvər/ shin-AYD-DY-ver[2] born 17 February 1977) is an Irish-Australian long-distance runner.

[3][4][5] Diver was born and raised in County Mayo in Belmullet on the western coast of Ireland.

She attended a conservative Catholic school in the small Irish town where academics were the priority and they didn't encourage girls to participate in athletics, aside from playing a little basketball at lunch.

[9] Having graduated from the University of Limerick with a degree in physical education and Irish language,[2] Diver moved to Australia in 2002.

[22] Diver ran a time of 2:21:34 at the 2022 Valencia Marathon, thus setting a new Australian and Continental record at age 45.