The present study focused on multicopper oxidase enzymes status in serum and saliva of patients with non-alcoholic fatty liver disease (NAFLD), and alcohol-related liver disease (ALD). Four groups of Iraqi males, 18 patients with NAFLD, 18 patients with ALD, 30 non-smokers and non-alcoholic control (control 1), and 20 smokers with non-alcoholic control (control 2) were the participants of this study. The changes in the activity of three different ferroxidases: Total, non-ceruloplasmin (non-Cp), and ceruloplasmin (Cp) ferroxidase, were investigated in the serum and saliva of these participants, as well as the measurement of total protein concentration, and copper concentration. The results reflected the presence of a highly significant decrease (p<0.001) in serum total ferroxidase activity and specific activity as well as in Cp ferroxidase activity for both patient's groups and in non-Cp ferroxidase activity in ALD patients, with a highly significant increase in Cp ferroxidase specific activity in ALD patients group only. Meanwhile, in the saliva of all studied groups, different ferroxidases activities and specific activities except in ALD showed non-significant differences (p>0.05), except in that of Cp ferroxidase specific activity in the ALD patients they showed a significant increase (p<0.001) compared to its control group. The copper level was found to be highly significantly decreased (P<0.001) in serum of the patients with NAFLD and highly significantly increased in saliva of the ALD group. The results of the correlation between the changes in the studied parameters that occurred in serum and saliva indicated that there was a significant correlation in non-Cp ferroxidase activities (p<0.01) in the case of control 1, a highly significant correlation in total and non-Cp ferroxidase activities (p<0.01), as well as a significant correlation (p<0.05) in non-Cp specific activity only in NAFLD patients. Meanwhile a highly significant correlation was found in non-Cp activity (p<0.01) of the control 2 group, and a highly significant correlation (p<0.01) was clear inCp ferroxidase activity in the ALD patients group. This study's results indicated the activity of the different ferroxidases and copper concentration contribute in a different manner to the oxidative stress and iron overload reported previously in our laboratory in serum and saliva of ALD and NAFLD patients. Furthermore the results of Pearson correlations indicated the possibility of using saliva instead of serum to measure a limited number of parameters.