Don Diego de Molina (died 1618) was a Spanish naval captain and spy, originally from Castile. On 13 April 1611, he sailed the ship La Nuestra Senora del Rosario to Virginia, ostensibly to recover artillery from a shipwreck, but in reality to spy on the English settlement at Jamestown; he was accompanied by the English traitor Francis Lembry. The ship landed at Point Comfort, from which Molina, Lembry, and ensign Marco Antonio de Perez snuck past the guns of Fort Algernon. However, the Spanish ship's crew panicked and fled after the English captain John Clarke came out to guide the ship to safer anchorage, taking Clarke captive and abandoning Molina, Lembry, and Perez. The three Spaniards were taken prisoner and later transferred to Henricus, where Perez died in poor prison conditions. During his stay at the fort, Molina smuggled information back to Spain about the colony's weak defenses at Point Comfort, Jamestown, and Henricus, revealing that the English garrisons did not expect reinforcements from England, that their weak fortifications could be kicked down, and that 500 Spanish soldiers could take the fort. Molina was exchanged for Clarke in 1613, and, in 1618, he encouraged King Philip III of Spain to send a fleet to wipe out the Jamestown colony. King Philip, motivated by England's continued support for the United Provinces in the Dutch Revolt in spite of the peace treaty between England and Spain, agreed to send the fleet, and Molina accompanied it. However, the fleet mutinied before it could reach Virginia, and Molina was killed by his mutinous sailors.