Nishiyamato Academy of California (西大和学園カリフォルニア校, Nishiyamato gakuen kariforunia kō, NAC) is a private Japanese international day school for students from pre-kindergarten through 9th grade, offering a Japanese guideline-based curriculum.

[4] The co-educational academy consists of a kindergarten, an elementary school division, and a middle school division with approximately 150 students, all located in Lomita, California, in the Los Angeles metropolitan area.

[7] Nishiyamato Academy of California was established on July 22, 1992, by Ryotaro Tanose, former chairperson of the board of trustees for Nishiyamato Gakuen [ja], a Japanese school corporation, and former member of Japanese Diet from Nara Prefecture.

The classrooms obtained that time for Nishiyamato's use, numbering 10, was virtually the remaining lease-able area in Dapplegray.

[2] In 2017 the school established a 2,500-square-foot (230 m2) cultural center with computer labs, a stage that can move, and a library with a capacity of 5,000 books.