John Samuel de Montmollin II (1808 – June 9, 1859) of Savannah, Georgia, was an American slave trader, banker and plantation owner.

"[10] According to his daughter-in-law, who was interviewed in 1931, Montmollin sought to reopen the transatlantic slave trade and was responsible for organizing the illegal human trafficking transport Wanderer in 1858.

[11] His body was found "imbedded in the marsh, head downwards, to the hips, some seventy to eighty yards from where the explosion occurred, showing it must have been driven very high into the air.

"[11] Montmollin was killed "within a short distance of the spot where his [Wanderer] captives had been incarcerated" on an island in the Savannah River.

[12] Following Montmollin's death, his widow found that "her husband died owing debts of more than $30,000" and so in 1863 petitioned a court for permission to sell the estate slaves she had inherited.