Frans Julius Johan van Eysinga (31 December 1818 – 16 April 1901) was a Dutch politician.

Son of a wealthy landowning local nobleman and politician, Van Eysinga studies law in Utrecht from 1837 till 1841.

In 1862 he was one of 12 members of senate opposed to the design law to abolish slavery in the Dutch West Indies.

He was made a knight in the Order of the Netherlands Lion on 15 September 1860 and commander on 10 March 1881 for his part in creating the Wetboek van Strafrecht (Criminal law code).

baron de Vos van Steenwijk, member of the House of Representatives, son in law of J.H.