Upper Hutt City Council ↔ Changzhi
Sister city · China · since 2005
NZ region Wellington
Porirua City Council ↔ Whitby
Sister city · United Kingdom
Porirua City Council ↔ Nishio
Sister city · Japan · since 1993
Porirua City Council ↔ Yangzhou
Friendly city · China · since 2002
Porirua City Council ↔ Blacktown
Sister city · Australia · since 1984
Porirua City Council ↔ Bamiyan
Friendly city · Afghanistan · since 2008
Masterton District Council ↔ Hatsukaichi
Sister city · Japan
Masterton District Council ↔ Changchun
Sister city · China · since 1996
Hutt City Council ↔ Tempe
Sister city · United States · since 1981
Hutt City Council ↔ Minoh
Sister city · Japan