Jacob Henry Tillett (1 November 1818 – 30 January 1892 ) was an English Liberal Party politician who sat in the House of Commons variously between 1870 and 1885.
Tillet was born in Norwich, the son of Jacob Tillett and his wife Elizabeth Towler.
In 1845 he was one of the founders of Norfolk News with Jeremiah Colman, John Copeman, Thomas Jarrold and Joseph Massingham.
Tillett was acquainted with leading liberals including Richard Cobden, Bright and John Morley.
A Conservative councillor noted for that for the first time an election was held in Norwich without drunkenness corruption and bribery.