Lucy Harth Smith (1888 – September 22, 1955) was an educator, writer and activist who worked to challenge inequality in the Kentucky public school system.
She taught in the Roanoke city school system from 1908 until 1910, when she moved to Lexington, Kentucky.
She was the principal of Booker T. Washington Elementary School in Lexington, Kentucky for 37 years.
When a new school building was being remodeled she protested at the inclusion of a separate back entrance for black students.
Smith worked in her spare time to improve the lives of Kentucky's black children at a youth camp she founded in 1942.