| The Arc of Kona | Committed to helping persons with disabilities achieve the fullest possible independence and participation in our society according to their wishes. |
| The ARC of LaGrange County | Enable communities to include, support, and empower people with disabilities and family members, promote the perspectives of families and persons with disabilities & serve as a resource to communities. |
| The Arc of Lane County | Advocate to enhance the dignity, expand the opportunities, and protect the rights of persons with intellectual and developmental disabilities and their families. |
| The Arc of Laramie County | Committed to expanding opportunities for people with intellectual and developmental disabilities so that they may be included in their communities. |
| The Arc of Larimer County | Protecting the civil rights of individuals with intellectual and developmental disabilities (I/DD). |
| The Arc of Lehigh and Northampton Counties | Advocate, educate, and provide services and support for people with intellectual and developmental disabilities and their families. |
| The Arc of Levy County | |
| The Arc of Liberty County | |
| The Arc of Lincoln | Empower and serve individuals with intellectual and developmental disabilities and their families. We advocate for their rights and community inclusion. |
| The Arc of Litchfield County, Inc. | Guided by a vision of Community for All, LARC promotes individual empowerment, choice, respect, and dignity. |