To provide a method for producing a tertiary amine, by which the tertiary amine can profitably be produced without using a heavy metal catalyst, a noble metal-based catalyst, or the like.

This method for producing the tertiary amine represented by formula (3) (R1 and R2 are each an aliphatic group, an alicyclic group, an aromatic group or a heterocyclic group which may have one or more substituents; R3 is an alicyclic group, an aromatic group or a heterocyclic group which may have one or more substituents; R4 is H, methyl or ethyl) is characterized by reacting a secondary amine represented by formula (1) with a compound represented by formula (2) in the presence or absence of at least one compound selected from the group consisting of alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal alcoholates, alkaline earth metal alcoholates, alkali metal salts, and alkaline earth metal salts.