Thomas Fountain Blue (March 6, 1888 - November 10, 1935) was a minister, educator, and civic leader best known for his work as head of the Colored Branches of the Louisville Free Public Library and as an early trainer of African-American librarians.
Blue was the first African-American to head a public library and his efforts led to the Louisville Free Public Library being nationally recognized as a leader in segregated library administration and education for African Americans.