Linden leaf is plant material obtained from the leaves of the linden tree (Tilia). The linden tree is a species of tree that grows in temperate climates and whose flowers and leaves are valuable for medicinal and aromatic uses. Linden leaves are the main ingredient in a popular herbal tea, also known as linden tea.

Linden leaves are usually dried and used to make tea. This tea is often consumed for its relaxing and mild sedative effects. Linden leaves are also used in traditional medicine to treat various health problems.