The electrooxidation of benzylamine, 2-phenylethylamine and 4-hydroxyphenylethylamine (tyramine) at a gold electrode in contact with an alkaline electrolyte solution was studied. The effect of amine concentration, electrolyte pH and potential scan rate on the electrooxidation was analysed. The adsorption of amines on the gold-solution interface was found to play a significant role in the oxidation mechanism. The rate determining step was the heterogeneous dehydrogenation of the amine molecule, involving electron transfer to the gold electrode and the formation of a water molecule. The catalytic effect of the gold electrode on both benzylamine and 2-phenylethylamine oxidation is higher than that for tyramine.