Abstract Emerging evidences suggest that cognitive deficits in individuals with mild cognitive impairment (MCI) are associated with disruptions in brain functional connectivity (FC). This systematic review and meta‐analysis aimed to comprehensively evaluate alterations in FC between MCI individuals and healthy control (HC) using functional near‐infrared spectroscopy (fNIRS). Thirteen studies were included in qualitative analysis, with two studies synthesized for quantitative meta‐analysis. Overall, MCI patients exhibited reduced resting‐state FC, predominantly in the prefrontal, parietal, and occipital cortex. Meta‐analysis of two studies revealed a significant reduction in resting‐state FC from the right prefrontal to right occipital cortex (standardized mean difference [SMD] = −.56; p