Toyohara is a Japanese surname.

Notable people with the surname include:

Toyohara Chikanobu (1838–1912) of the Utagawa school Erika Toyohara (豊原 江理佳, born 1996), Japanese actress Kōji Toyohara (豊原 浩司, born 1966), Japanese game creator and programmer Kōsuke Toyohara (born 1965), Japanese actor and singer Toyohara Kunichika (1835–1900), Japanese woodblock print artist Satomi Toyohara (born 1982), Taiwanese–Japanese actress and voice actress Yumenosuke Toyohara (豊原 夢ノ介), a character in the Japanese stage Miracle☆Stage “Sanrio Boys”: One More Time (ミラクル☆ステージ『サンリオ男子』 ~One More Time~)