The cleanability of four cotton cultivars with varying degrees of leaf hairiness was investigated. All cotton was treated identically from planting through harvesting. Seed cotton was conditioned at 70 F and 55% RH for 24 hours before gin processing. All cotton was cleaned and ginned with the standard machinery sequence for spindle-picked cotton. Significant differences occurred in the classer's leaf grade for the cotton which resulted in a one-half grade reduction. The degree of leaf hairiness appeared to influence the quantity of visible foreign matter in the ginned lint.