Parker Island is an undeveloped island in the West Isles Parish of Charlotte County, New Brunswick, Canada, where the Bay of Fundy enters Passamaquoddy Bay. Remainder of parish on mapbooks 490, 497, 500, and 501 at same site.

In 1832, Thomas Baillie wrote of an island south of Macs Island "which has been settled, but now is deserted. It contains about fifty acres, and is fit for a fisherman.", which could reference Parker or Jameson Island.

Geography and composition Jameson, Crow, Hardwood, Parker and Partridge Island are all share a land shelf north of Deer Island, where the waters are generally less than 10m below mean sea level in depth.What Images Return: A Study of the Stratigraphy and Seasonality of a Small Shell Midden in the West Isles of New Brunswick, November 1983

In December 1985, a study by Parks Canada assessed the island's value as $26,100.Parks Canada, "West Isles Feasibility Study....a National Marine Park in the West Isles", December 1985

In the summer of 1986, benthic algae sublittoral research stations were set up across the region including on Parker Island.A Survey of the Benthic Marine Algae of Southwestern New Brunswick, Canada, 1988

As of 2000, sea cucumber harvesting happened between Parker Island and Macs Island.

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