The Léfini Faunal Reserve is a protected area in the south of the Republic of the Congo.

[1] It lies on the Téké Plateau, which is characterised by an undulating grassy and forested landscape broken by limestone cliffs and rocky outcrops.

Local depressions in the landscape hold ponds and lakes.

[2] The reserve has been designated an Important Bird Area (IBA) by BirdLife International because it supports significant populations of many bird species.

Despite being overhunted in the past, large mammals still occurring in the reserve include African buffaloes, sitatungas, duikers and primates, including De Brazza's monkeys.