This paper presents a method for designing discrete-time adaptive pole placer to unknown-order plants with disturbance. Since pole placement is inherently free from the problems on existence of nonminimum phase zeros and uncertainty of dead-time of plant, the method can be applied to nonminimum phase, unknown-dead-time, unknown-order plants with disturbance. It takes indirect approach and is characterized by new algorithms for estimating plant parameters from input, output and determing controller parameters based on the estimates, which are intended to be shown in detail.