Kate Langley Bosher (February 1, 1865 - July 27, 1932) was an American novelist from Virginia, best known for her novels Mary Cary (1910) and Miss Gibbie Gault (1911). She was also a suffragist and founding member and officer of the Equal Suffrage League of Virginia. Bosher was best known for writing popular fiction; her works were typically set in Virginia or in other locations in the American South and focused on the experiences of southerners after the American Civil War. Bosher's first book Bobbie (1899) was published when she lived in Richmond under the pseudonym Kate Cairns while the rest of her books were written under her real name. Her most successful novels were Miss Gibbie Gault (1911), Kitty Canary (1918), His Friend Miss McFarlane (1919), and Mary Cary, Frequently Martha (1910).
