Kaichi Yamamoto, also known as Yamakichi, was a distinguished Japanese actor renowned for his performances in both contemporary and period films. He was a prominent figure at Nikkatsu studios following the era of Onoe Matsunosuke.

At the age of 18 in 1895, he joined the "Kawakami Onjuro Troupe," a prominent New School (Shinpa) theater group led by Onjuro Kawakami. Four years later, at the age of 22, Yamamoto participated in the troupe's overseas performances, including those in the United States, showcasing his talent on international stages. In 1917, he was invited to join the Nikkatsu Mukojima Studio, where he transitioned to film acting after a prolific 22-year theatrical career, shortly before turning 40.