Abraham Lincoln's first inaugural address was delivered on Monday, March 4, 1861, as part of his taking of the oath of office for his first term as the sixteenth president of the United States. The speech, delivered at the United States Capitol, was primarily addressed to the people of the South and was intended to succinctly state Lincoln's intended policies and desires toward that section, where seven states had seceded from the Union and formed the Confederate States of America.

The first inauguration of Abraham Lincoln as the 16th president of the United States was held on Monday, March 4, 1861, at the East Portico of the United States Capitol in Washington, D.C. This was the 19th inauguration and marked the commencement of the first, and eventually only full term of Abraham Lincoln as president and the only term of Hannibal Hamlin as vice president. The presidential oath of office was administered to Lincoln by Chief Justice Roger B. Taney. John C. Breckinridge became the first outgoing vice president to administer the vice-presidential oath of office to his successor.