Alaska Clean Seas (ACS) is a non-profit, incorporated oil spill response cooperative whose current membership includes oil and pipeline companies that engage in or intend to undertake oil and gas exploration, development, production and/or pipeline transport activities on the North Slope of Alaska.

Originally formed in 1979 as ABSORB, ACS was restructured in 1990 from an equipment cooperative into a full-response organization. ACS is now organized to respond, like a fire brigade, to an emergency with both trained people and equipment.

ACS is active in streamlining approval processes and in fostering a common organizational structure for responding to and managing spills on the North Slope of Alaska.