Thermoelectric transformation material containing nitrogen

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A nitrogen-containing thermoelectric material, which has an element composition represented by : AlzGayInxMuRvOsNt  (A) or AlzGayInxMuRvDwNm  (B) (wherein M represents a transition element; R represents a rare earth element; D represents at least one element selected from elements of the Group IV or II; 0≰z≰0.7, 0≰y≰0.7, 0.2≰x≰1.0, 0≰u≰0.7, 0≰v≰0.05, 0.9≰s+t≰1.7, 0.4≰s≰1.2, 0≰w≰0.2 and 0.9≰m≰1.1; and x+y+z=1), and has an absolute value of a Seebeck coefficient of 40 μV/K or more at a temperature of 100° C. or more. These thermoelectric materials comprise elements having low toxicity, are excellent in a heat resistance, a chemical resistance and the like, and have a high thermoelectric transforming efficiency.