Trigonometric Multipliers on $H_{2\pi}$ In this paper we consider multipliers on the real Hardy space $H_{2\pi}$. It is known that the Marcinkiewicz and the H\"ormander--Mihlin conditions are sufficient for the corresponding trigonometric multiplier to be bounded on $L_{2\pi}^p$, \$1 Keywords:Multipliers, Hardy spaceCategories:42A45, 42A50, 42A85