Loyalty Day is observed on May 1 in the United States though not widely celebrated. It was proclaimed by President Dwight D. Eisenhower as a day for declaring loyalty to the United States of America and to acknowledge American history.

Each year on Loyalty Day, the current president is requested to issue a proclamation that asks the American government officials to display the American Flag on all government buildings. The proclamations also ask for the American people to observe Loyalty Day with ceremonies in suitable places. The most common way of celebrating is with parades.