Caroline Spencer (October 30, 1861 – September 16, 1928) was an American physician and suffragist who campaigned extensively for women's rights, both in her home state of Colorado and on the national level. She was one of many Silent Sentinels who demonstrated in front of the White House, and also participated in Watchfires, during the final months before the Nineteenth amendment was passed. She was inducted into the Colorado Women's Hall of Fame in 2006.