Robert E. Lee's Birthday is a commemorative holiday celebrated in the United States of America. It marks the birth of Robert E. Lee, who was a general for the Confederate Army during the American Civil War. The observance of this holiday varies by state, but it mainly takes place in Southern U.S. states where Lee's legacy and influence are most substantial.

The state of Wisconsin (WI) is among the regions of the U.S. that acknowledge this occasion. Although it might not hold public events or official celebrations as in the South, some of its citizens respect and celebrate the day individually. The extent of celebrations typically reflects the regional attitudes and perspectives on the Civil War history and its notable figures, such as Robert E. Lee.

Despite the controversy and debates surrounding Lee’s historical image, his birthday remains part of the national conversation in the United States, particularly in states like Wisconsin. Nevertheless, the holiday serves as a stark reminder of America's complex and often conflicting history, providing opportunity for dialogue, learning, and reflection on the nation's past.