The Ibagué Fault is a right-lateral strike-slip fault crossing the Central Cordillera of Colombia in the department of Tolima, cutting diagonally across the mountains near the city of Ibagué for roughly 100 kilometres. It is one of the most conspicuous active structures in central Colombia.
The fault forms part of the complex deformation zone driven by convergence of the Nazca Plate with South America and the northward extrusion of the North Andean Block. Its trace is marked by displaced alluvial fans and offset drainages across the Magdalena valley margin, showing clear evidence of recent movement.
Palaeoseismic studies indicate the Ibagué Fault has produced surface-rupturing earthquakes in the geologically recent past, and it is considered capable of magnitude 7 events. Given its proximity to the populous city of Ibagué, it represents a significant seismic hazard for the region.