Leet is an online slang and alternative orthography.

Leet or LEET may also refer to:

• Leet, a mediaeval court leet or its jurisdiction
• Legal Education Eligibility Test, a South Korean law school exam

• Leet (surname)—lists people so named
• Leet O'Brien, American architect

• Leet Township, Pennsylvania, United States
• Leet, West Virginia, United States
• Leets Vale, New South Wales, near Sydney, Australia

• Leat or leet, an artificially dug watercourse or aqueduct
• Leet (programming language), an esoteric/conceptual computer language
• Leet-ale, a type of parish fair
• LEET rocket engine, a conceptual engine design to replace the Raptor engine used in SpaceX Starship

• Ryan Leet, an ocean-going salvage tug
• Leete (disambiguation)