Arctic Coastal Plain Domestic Energy Security Act of 2003

Arctic Coastal Plain Domestic Energy Security Act of 2003 - Instructs the Secretary of the Interior to establish and implement a competitive oil and gas leasing program that will result in an environmentally sound program for the exploration, development, and production of the oil and gas resources of the Coastal Plain.

Amends the Alaska National Interest Lands Conservation Act of 1980 to repeal the prohibition against production of oil and gas from the Arctic National Wildlife Refuge and any leasing or development leading to such production.

States that, for purposes of the National Wildlife Refuge System Administration Act of 1966, the Coastal Plain oil and gas leasing program is compatible with the purposes for which the Arctic National Wildlife Refuge was established, and that no further findings or decisions are required to implement this determination.

Authorizes the Secretary to: (1) designate a maximum total of Coastal Plain acreage as "Special Areas;" (2) permit oil and gas exploration leasing in such Areas (but prohibit surface occupancy); and (3) permit horizontal drilling technology from lease sites located outside the Special Areas.

States that this Act constitutes the Secretary's sole authority to close Coastal Plain lands to oil and gas leasing and to exploration, development, and production.

Prescribes procedures for: (1) lease sales; (2) grants of leases; (3) lease terms and conditions; and (4) coastal plain environmental protection.

Shields rights-of-way and easements issued by the Secretary for the transportation of oil and gas across the Coastal Plain from Title XI of the Alaska National Interest Lands Conservation Act of 1980.

Directs the Secretary to convey: (1) the surface estate of specified lands to the Kaktovik Inupiat Corporation; and (2) the remaining subsurface estate of specified lands to the Arctic Slope Regional Corporation.

Establishes the Coastal Plain Local Government Impact Aid Assistance Fund to provide financial assistance to specified entities that are directly impacted by oil and gas production and exploration on the coastal Plain.