Amanaki is a name. Notable people with the name include:
Amanaki Lotoahea (born 1990), Tongan-born Japanese rugby union player
Amanaki Mafi (born 1990), Tongan-born Japanese rugby union player
Amanaki Nicole (born 1992), New Zealand rugby union player
Sione ʻAmanaki Havea (1922–2000), Tongan minister
