Medway River (New Zealand)

{{Use New Zealand English|date=April 2024}}

{{Use dmy dates|date=July 2019}}

{{Infobox river

| name = Medway River

| image = Medway River, Marlborough, New Zealand.jpg

| image_size = 350px

| image_caption = Medway River

| source1_location = Inland Kaikoura Range

| mouth_location = Awatere River

| subdivision_type1 = Country

| subdivision_name1 = New Zealand

| length_km = 22

| source1_elevation =

| mouth_elevation =

| discharge1_avg =

| basin_size =

}}

The Medway River of the Marlborough Region of New Zealand's South Island originates in Inland Kaikoura Range. It flows northwest then north from its sources, to meet the Awatere River {{convert|20|km|mi}} southwest of Seddon.