The Battle of Fancá (1886) was a military engagement that took place in Fancá, modern-day Gabú, Guinea-Bissau, between Portuguese colonial forces, commanded by Marques Geraldes, supported by local allies under Nbuku, and the forces of Fuladu, led by Musa Molo.

[2] In Geba, the Portuguese found themselves powerless to counter Musa Molo's demands for taxes and levies.

[1][2] The battle lasted three hours, during which Musa Molo's forces resisted fiercely but were ultimately overwhelmed.

[2] After their victory, the Portuguese began incorporating parts of Fuladu into the newly proclaimed province of "Guiné Portuguesa.

"[2] The operations would finish on September 15,[1] but Marques Geraldes would lead another campaign against Musa Molo in 1889-1891.