Extensive research has consistently underscored the significance of visual information, particularly facial cues, in primates’ establishment and maintenance of social relationships within their communities. This study aims to delve into the cross-species face recognition capacities of gibbons through exposure to a diverse array of two-dimensional face images, encompassing upright and non-upright faces, as well as images featuring incomplete facial features and contours. Employing the well-established go/no-go paradigm, gibbons were tasked with choosing between two concurrently presented face images. The findings shed light on gibbons’ extraordinary cross-species face recognition capacities, underpinned by their remarkable holistic perception capacities. Crucially, their holistic perception remains steadfast even in the face of incomplete features, truncated contours, and non-upright faces, empowering them to surmount the challenges posed by the face inversion effect.