Voluntary Public Access and Wildlife Habitat Incentive Program Act of 2003 - Amends the Food Security Act of 1985 to direct the Secretary of Agriculture to establish a program under which States may apply for grants to encourage owners and operators of privately-held farm and ranch land to voluntarily make such land available for public access and habitat-related activities under State-administered plans.
Amends the Farm Security and Rural Investment Act of 2002 to exclude from excess base acreage computation for direct and counter-cyclical payment purposes certain conservation enrolled farm land not planted in an agricultural commodity.