Aza Tōma (亜あ左ざ 桐とう馬ま) is the younger brother and right-hand man of the infamous bandit Aza Chōbei. He is a major supporting character of Hell's Paradise: Jigokuraku.

After his brother was arrested, Tōma infiltrated the Yamada clan in order to reunite with Chōbei in prison and presented him with the shogun's mission to acquire the Elixir of Life from the dangerous island believed to be Shinsenkyō. With the reward being a pardon exempting the criminal of their past crimes, Chōbei accepted.