Feature-based visual attention refers to preferential selection and processing of visual stimuli based on their non-spatial attributes such as color or shape. Recent studies have highlighted the inferior frontal junction (IFJ) as a control region for feature but not spatial attention. However, the extent to which IFJ contributes to spatial versus feature attention control remains a topic of debate. We investigated in humans of both sexes the role of IFJ in the control of feature versus spatial attention in a cued visual spatial (attend-left or attend-right) and feature (attend-red or attend-green) attention task using fMRI. Analyzing cue-related fMRI using both univariate activation and multivoxel pattern analysis (MVPA), we found the following results in IFJ. First, in line with some prior studies, the univariate activations were not different for feature and spatial attentional control. Second, in contrast, the MVPA decoding accuracy was above chance level for feature attention (attend-red vs. attend-gre...