Sir Horace Jones (1819 - 1887) was a notable English architect of the 19th century, knighted in 1885.

He is particularly noted for his work as Architect for the Corporation of the City of London from 1864 to 1887. His works included:

• restoration of the Great Hall, Guildhall (1866)
• various London markets, including Smithfield (1866), Billingsgate (1875) and Leadenhall (1881)
• the Guildhall free library and museum (1872)
• the Guildhall Council Chamber (1884)
• the Guildhall School of Music and Drama, John Carpenter Street (completed in 1886)
• Tower Bridge, which was completed (to an amended design) after his death in 1887.

He was buried in West Norwood Cemetery in south London.