Four new species of earthworm species collected from various parts of Hainan Island were found. The species belong to Amynthas and Metaphire and are characterized by having two pairs of spermathecae in 7/8–8/9. They are described here as Amynthas flexuosus sp. nov., A. lucidus sp. nov., A. haikouensis sp. nov. in the aeruhinosusgroup of species of the genus Amynthas, and Metaphire fortuita sp. nov. in the insulana-group of species of the genus Metaphire. Their anatomical and morphological characteristics are compared to similar species from Hainan Island, China mainland and South-East Asia.