Kantarō Suga (菅貫太郎? Suga Kantarō) (born December 12, 1934 in Yuzawa, Akita - died March 16, 1994 in Yokohama) was a leading Japanese actor. His film credits span three decades, from 1960 to 1990. One of his prominent appearances was in the lead role in Pastoral: To Die in the Country. Suga also appeared in The Gate of Youth, Sword of the Beast, and Theater of Life. He also portrays Souichiro Akizuki- the father of Nobuhiko, Kyoko and also the foster father of the protagonist Kotaro Minami in the tokusatsu series Kamen Rider Black.
A frequent television guest star, Suga acted in jidaigeki and contemporary shows. Twenty appearances on Abarenbō Shōgun, thirteen on Zenigata Heiji, eleven on Momotarō-zamurai, nine on Ōoka Echizen, seven on Edo o Kiru, and numerous guest roles on various programs in the Hissatsu series top his list of roles.