The Fajã de Fernando Afonso is a permanent debris field, built from the collapsing cliffs on the northern coast of the civil parish of Rosais, in the municipality of Velas, island of São Jorge, in the Portuguese archipelago of the Azores.

The fajã was named for an early settler that occupied a home at the base of the cliff.

Following the 1 January 1980 earthquake the area was temporarily abandoned, owing to its instability and the aftershocks.

A subsequent aftershock was responsible for the destruction of an important fountain bringing fresh water to the area.

There are a few houses on this fajã used by some residents during the growing season, when the cultivation of assorted vegetables, potatoes and vineyards.