Grace Sisilia Tupou Talagi (born February 27, 1952) is a Niuean diplomat and former High Commissioner of Niue to New Zealand (2005-2011).

[1][2] She earned a Bachelor of Science degree in chemistry and a Certificate of Law from the University of Otago in New Zealand.

[7] New Zealand is the only country in the world in which Niue exchanges diplomatic representatives.

[2] Talagi was succeeded as High Commissioner to New Zealand in March 2011 by former Cabinet minister O'Love Jacobsen.

Talagi is Niue's first female diplomat and the first woman to hold the post of High Commissioner.