Samantha Warriner (born 1 August 1971) is a retired triathlete who represented New Zealand in triathlons ranging from sprint distance up to the Ironman.

She turned professional at the end of 2005 after competing internationally for 3 years while teaching full-time at Whangarei Girls High School.

[8] In 2009 Sam won the Port of Tauranga Half Ironman in a course record time of 4:10:47.

In 2010 Samantha underwent heart surgery for super-ventricular tachycardia, 12 weeks later she won the Kelloggs Nutrigrain Ironman NZ in Taupō, New Zealand.

Only 3 other women in the history of triathlon had won the ITU World Series and an Ironman in their career.