Cook Inletkeeper is a non-profit water conservation and ecology organization based in Homer, Alaska.

Their stated goal is "promoting sound public policies that protect fish habitat and water quality; and holding individuals, industry and agencies accountable for habitat, water quality and human health in the Cook Inlet watershed. "

The organization was founded in 1994 with funds from a legal settlement involving oil companies that extracted resources from Cook Inlet.

They were involved in pressuring the National Marine Fisheries Service to list the Cook Inlet population of beluga whales as endangered.

[2] They also manage a water quality laboratory in Homer that monitors 240 sites around Cook Inlet.