Lilu may refer to:

• Lilu (ancient China), a tribe or state in ancient China
• Lilu (mythology), a creature in Akkadian mythology
• Lilu, Estonia, a village in Estonia

• Arkansas Highway 1B (Cherry Valley)
• Arkansas Highway 1B (De Witt)
• Arkansas Highway 1B (Forrest City)
• Arkansas Highway 1B (Gillett)
• Arkansas Highway 1B (Jonesboro)
• Arkansas Highway 1B (Marianna)
• Arkansas Highway 1B (Paragould)
• Arkansas Highway 1 Business (Jonesboro)
• Arkansas Highway 1 Business (Marianna)
• Arkansas Highway 1B (Vanndale)
• Arkansas Highway 1C
• Arkansas Highway 1C (Gillett)
• Arkansas Highway 1C (Vanndale)
• Arkansas Highway 1S
• Arkansas Highway 1S (St. Charles)
• Arkansas Highway 20
• Arkansas Highway 201S
• Arkansas Highway 201S (Mountain Home)
• Arkansas Highway 209
• Arkansas Highway 20S
• Arkansas Highway 20S (Westover Landing)
• Arkansas Highway 210
• Arkansas Highway 213
• Arkansas Highway 216
• Arkansas Highway 218