The British Lymphology Society (BLS) is a UK charity and professional organisation supporting people involved in the care and treatment of lymphoedema and related lymphatic disorders, including lipoedema. Established in 1985 as the British Lymphology Interest Group, the Society works to promote high standards of care, fair access to treatment, and early detection and intervention. Its work also supports screening and prevention where appropriate.

BLS brings together healthcare professionals, people interested in lymphoedema care, and corporate partners. Members include nurses, physiotherapists, doctors, occupational therapists, and manual lymphatic drainage therapists. The Society offers individual, collective, student, healthcare assistant, and corporate membership, with opportunities to connect through regional representatives, working groups, and scientific committees.

Resources include educational courses, events, webinars, conference activities, guidance documents, and information about lymphoedema. BLS also maintains a UK directory of member-provided treatment services, helping users find local service details, available treatments, practitioner qualifications, and training information. Through news, awareness initiatives, and professional collaboration, the Society seeks to improve lymphoedema care and support those affected.