Steffi Faasusivaitele Hearthington Carruthers (born 24 May 1993) is a Samoan former tennis player.

[1][2] Carruthers is from the village of Vailima, and was educated at Vaiala Beach School and Samoa College.

Playing for Pacific Oceania in Fed Cup, Carruthers has a win-loss record of 11–11.

[7] She later competed in the 2017 Pacific Mini Games in Port Vila, Vanuatu, winning gold in the doubles,[8] gold in the singles,[9] silver in the mixed doubles, and bronze in the women's team events.

At the 2019 Pacific Games in Apia she won silver in the women's team event.