Alli may refer to:
- "Alli", an over-the-counter preparation of Orlistat marketed by GlaxoSmithKline
- Alli Bhandari, a fictional character in Degrassi: The Next Generation
- Antero Alli (born 1952), professional astrologer
- Darogha Ubbas Alli (19th century), Indian engineer and photographer
- Waheed Alli, Baron Alli (born 1964), British multimillionaire media entrepreneur and politician and notable gay Muslim
- Yusuf Alli (born 1960), retired Nigerian long jumper