The present invention provides a process for efficiently producing an alkylated aromatic compound in good yield, by a cross-coupling reaction between an alkyl halide and an aromatic magnesium reagent. A process for producing an aromatic compound represented by Formula (1): R—Ar′  (1) wherein R is a hydrocarbon group, and Ar′ is an aryl group; the process comprising: reacting a compound represented by Formula (2): R—X  (2) wherein X is a halogen atom, and R is as defined above, with a magnesium reagent represented by Formula (3): Ar′—MgY  (3) wherein Y is a halogen atom, and Ar′ is as defined above, in the presence of a catalyst for cross-coupling reactions comprising an iron compound and a bisphosphine compound represented by Formula (4): wherein Q is a divalent group derived from an aromatic ring by removing two hydrogen (H) atoms on adjacent carbon atoms; and each Ar is independently an aryl group.