The Lichen Sclerosus Support Network is an international non-profit organization that empowers individuals affected by Lichen Sclerosus through education, support, and community engagement.

The Life Raft Group supports patients with Gastrointestinal Stromal Tumor (GIST) and other rare diseases through patient-powered research, education, and advocacy efforts.

Lifetime Advocacy Plus enhances the lives and protects the rights of people with significant life challenges through personal attention, advocacy, guardianship, and trust and financial management.

Life’sWork of Western PA is a nonprofit organization that empowers individuals with disabilities and other barriers to achieve independence and self-sufficiency through employment support services and life skills development.

The Lilabean Foundation is dedicated to funding essential research for childhood brain cancer and raising awareness about the seriousness of this devastating disease.

Lipodystrophy United is dedicated to increasing awareness and understanding of lipodystrophy, providing support and resources for patients and healthcare professionals dealing with this condition.

Little Hearts, Inc. is a national organization dedicated to providing support, education, resources, networking, and hope to families affected by congenital heart defects.

Little People of America (LPA) is a nonprofit organization that provides support and information to individuals with dwarfism and their families.

The Living Bank provides education and advocacy services for living organ donation, aiming to eliminate the shortage of organs for lifesaving transplants.

This organization provides support, education, and advocacy for individuals with Klinefelter syndrome (XXY) and their families, aiming to change perceptions and improve awareness of the condition.

Locks of Love provides custom hair prosthetics to financially disadvantaged children suffering from hair loss, free of charge, and supports related medical research.

The Loeys-Dietz Syndrome Foundation provides information and support for individuals affected by Loeys-Dietz syndrome, focusing on education, community connection, and fundraising to support research and resources.

The Lowe Syndrome Association provides resources and support for families affected by Lowe syndrome, uniting families and facilitating research and medical answers.

The Canadian Lung Association supports individuals affected by lung conditions, funds research for new treatments, and advocates for improved lung health policies.

GO2 for Lung Cancer provides support, information, and resources for patients, survivors, and caregivers affected by lung cancer.

Lung Foundation Australia supports individuals affected by lung diseases and lung cancer by providing care, knowledge, and resources, while also funding research for better treatments.

The Lung Transplant Foundation aims to improve the lives of lung transplant patients and their families by providing resources, support, and education throughout the transplant journey.

LUNGevity Foundation is a nonprofit organization focused on transforming the diagnosis and treatment of lung cancer through research, education, and support services.