Caius Furius Pacilus Fusus is a politician of the first century of the Roman République (O C). Father of Caius Furius Pacilus (consul in 412 av. J. - C.).

Certain authors identify it in Quintus Furius, Pontifex maximus in 449 av. J. - C, which is an extrapolation of the text of Tite-Live.

In 441 av. J. - C. he is consul with Marcus Papirius Crassus, year without external war

In 435 av. J. - C., it is critic with Marcus Géganius Macérinus; they carry out for the first time the taxable quota at the public house high on the Champ de Mars. The following year, the mandate of critics initially envisaged for five years was lowered to 18 months by a popular vote, on the proposal of the dictator Aemilius Mamercus. The two critics were avenged for this reduction in being able while multiplying by eight the imposition of Mamercus and by changing it tribe, causing popular anger.

In 426 av. J. - C., it is military Tribun with consular capacity, with three other colleagues. According to Tite-Live, their confused and incoordonné command is at the origin of military failures against Véies, and they were replaced by the dictator Aemilius Mamercus.