Kenji Uchino is an American electronics engineer, physicist, academic, inventor and industry executive.

[3] He is one of the pioneers in piezoelectric actuators and electro-optic displays and is the inventor of topics including lead magnesium niobate (PMN)-based electrostricive materials, cofired multilayer piezoelectric actuators, superior electromechanical coupling relaxor-PbTiO_3 single crystals, magnetoelectric laminated composite sensors, shape memory ceramics, and micro ultrasonic motors.

[5] Uchino is a Life Fellow of IEEE,[6] American Ceramic Society and International Association of Advanced Materials, and a senior member of National Academy of Inventors.

Uchino, along with his team, was the first to discover the giant electro-strictive effect in lead magnesium niobate based relaxor ferroelectric materials.

[13] Uchino contributed to the fundamental phenomenology in relaxor ferroelectrics and proposed a modified Curie-Weiss Law in the early 1980s.

[16] Uchino has also worked on high power density piezo-ceramics, and developed a new methodology on measuring three losses separately in piezoelectrics.

He is also the inventor of Cymbal actuators[19] that consist of a thin multilayer piezoelectric element and two metal end caps with narrow cymbal-shaped cavities bonded together.

[20] In collaboration with Denso Corporation in Japan, Uchino worked on piezoelectric energy harvesting with cymbal transducers from the engine vibration in a car.

His original design consisted of only two basic components, and guaranteed reduction of manufacturing cost and improvement of production efficiency and reliability.

[23] Uchino reported the analysis of transient vibration generated by a piezoelectric actuator after applying a pulse voltage.