Fascicle or fasciculus may refer to:
Anatomy
- Muscle fascicle, a bundle of skeletal muscle fibers
- Nerve fascicle, a bundle of axons (nerve fibers)
- Superior longitudinal fasciculus
- Gracile fasciculus
- Cuneate fasciculus
- Dorsal longitudinal fasciculus
- Medial longitudinal fasciculus
- Flechsig's fasciculus
Botany
- Fascicle (botany), a cluster of flowers or leaves, such as the bundles of the thin leaves (or needles) of pines
- A discrete bundle of vascular tissue
Other uses
- Fasciculus, a fossil comb jelly
- Fasciculus Chemicus, a 17th-century anthology of alchemical writings
- Fascicle (book), a discrete section of a literary serial issued or published separately