Steffi Carruthers
Steffi Faasusivaitele Hearthington Carruthers is a Samoan tennis player.
Carruthers has a WTA singles career-high ranking of 662 achieved on 13 October 2014. She also has a doubles career-high ranking of 556, achieved on 16 November 2015. She has won two ITF titles in doubles.
Playing for Pacific Oceania in Fed Cup, Carruthers has a W/L record of 11–11.
Carruthers is the first Samoan woman to play professional tennis and the first Pacific Oceanian player to win a professional tournament.
ITF finals
Doubles: 3 (2–1)
| Outcome | No. | Date | Tournament | Surface | Partner | Opponents | Score |
| Winner | 1. | 6 June 2015 | Manzanillo, Mexico | Hard |  Carolina Betancourt |  Tornado Alicia Black Dasha Ivanova | 6–3, 6–3 |
| Winner | 2. | 12 September 2015 | Bol, Croatia | Clay |  Alina Silich |  Barbara Kotelesova  Natalija Sipek | 7–6 , 3–6, |
| Runner-up | 1. | 6 November 2015 | Loughborough, United Kingdom | Hard | Sabastiani Leon |  Freya Christie Lisa Whybourn | 1–6, 2–6 |
ITF Junior Finals
| Grand Slam |
| Category GA |
| Category G1 |
| Category G2 |
| Category G3 |
| Category G4 |
| Category G5 |