Lucius Cincinnatus may refer to:

• Cincinnatus, ancient Roman politician of the 5th and 6th centuries BC
• Lucius Quintus Cincinnatus Lamar (I) (1797-1834), father of Lucius Quintus Cincinnatus Lamar (II) and a Georgia jurist
• Lucius Quintus Cincinnatus Lamar (II) (1825-1893), US Supreme Court Associate Justice

• American Constitutional Society for Law and Policy
• American Constitution Party
• American Constitution Society
• American constitution society for law and policy
• American Consulate Japan
• American continent
• American Contract Bridge League
• American Convention on Human Rights
• American coot
• American Copperhead
• American Cordillera
• American Corner, Maryland
• American Correctional Association
• American Council of Christian Churches
• American Council of Learned Societies
• American Council of Life Insurers
• American Council of the Blind
• American Council on Alcohol Problems
• American Council on Science and Health
• American Country Countdown
• American Cream
• American Cream Team
• American cress
• American cricket team
• American crocodile