Volatile sulfur compounds (VSCs)—carbonyl sulfide (COS), dimethyl sulfide (DMS), and carbon disulfide (CS 2 )—play critical roles in atmospheric chemistry. Nevertheless, quantitative understanding of VSC exchange dynamics in coastal wetland ecosystems remains limited. Here, we quantified the sediment‐air fluxes of these VSCs across vegetated ( Spartina alterniflora and Suaeda glauca ) and unvegetated mudflat habitats via year‐...