Recently, superhydrophobic surfaces have received increasing attention due to its water repelling characteristics. In this study, a facile fabrication method based on ultrasonic imprinting is proposed to develop superhydrophobic surfaces. To fabricate superhydrophobic surfaces on PMMA substrates, micro electrical discharge machining, micromachining, and ultrasonic imprinting were sequentially used. The ultrasonic imprinting experiments were performed with an increase in imprinting load, and the resulting pattern replication quality was investigated. Water contact angles were then measured for the replicated samples under various imprinting loads. As a result, superhydrophobic characteristics could be obtained on a hydrophilic PMMA replica without any chemical treatments.