donald masike'vanua kalpokas (23 august 1943 – 20 march 2019) was a ni-vanuatu politician and diplomat. he served as prime minister of vanuatu twice (september 1991 – december 1991; march 1998 – november 1999). he was a member of the democratic socialist party vanua'aku pati. kalpokas was born on the island of efate.