This study describes the isolation and characterization of sulfur compound types in high boiling distillate of Arab crude oil. Thu distillates were prepared by physical and chemical methods like adsorption chromatography and complexation with mercurous nitrate and iodine. Spectrophotometry methods were used for detection and identification. The sulfur compound types, thus obtained, were classified into aliphatic sulfides, aromatic sulfides, and thiophencs. Sulfides represented the most abundant type of sulfur compounds in the distillate.