Thermoelectric (TE) properties such as resistivity (rho), Seebeck coefficient (S), and thermal conductivity (kappa) of Ca4-3xCe3xMn3O10 (0 < x less than or equal to 0.03) polycrystalline samples were measured from room temperature to 1000 K. p shows an obvious decrease with the increment of Ce content. The hopping conduction mechanism is used to explain the conduction behavior of these samples. The negative S values indicate that these materials are n-type. The sample of x = 0.03 has the largest power factor, 0.52 x 10(-4) Wm(-1) K-2 at 1000 K. The value Of K and the dimensionless figure 4 merit of this sample is 1.51 Wm(-1) K-1 and 0.034 at 1000 K, respectively. (C) 2002 Elsevier Science Ltd. All rights reserved.