The Prince Motor Company (Japanese: プリンス自動車工業株式会社) was an automobile marque from Japan which eventually merged into Nissan in 1966.

It began as the Tachikawa Aircraft Company, a manufacturer of various airplanes for the Japanese Army in World War II, e.g., the Ki-36, Ki-55 and Ki-74.

Among its most famous car lines were the Skyline and Gloria, both of which were absorbed into the Nissan range and continued after their 1966 merger; however, Prince also built the 15-passenger Homy which was eventually shared with the Nissan Caravan and the Nissan Laurel, a four-door sedan platform mate with the Skyline, on which Prince had begun development before the merger but was introduced after the merger in 1968.

Prince had also begun development on a small car to compete with the Toyota Corolla and Nissan Sunny, but after the merger, the car was introduced as the Nissan Cherry using front wheel drive.

From 1962, Prince switched to an alpha-numeric code, similar to what Nissan would eventually use.