Fatafehi is a name. Notable people with the name include:
Fatafehi ʻAlaivahamamaʻo Tukuʻaho (1954–2004), Tongan Prince Fatafehi Fakafanua (born 1985), Tongan politician Fatafehi Fuatakifolaha (1944–2017), Tongan noble Fatafehi ʻo Lapaha (1735–1825), 10th Tu'i Tonga Fefine Fatafehi Tuʻipelehake (1922–1999), prime minister of Tonga Alipate Fatafehi (born 1984), Tongan rugby union player Mario Fatafehi (born 1979), American football player Nikotimasi Fatafehi Laufilitonga Kakau Vahaʻi (born 1971), Tongan noble Tēvita Fatafehi Puloka, Tongan politician