An American scientist of Indian descent on a research project in the Sundarbans, whose strong sense of justice and commitment to her work often bring her into conflict with local customs.

Kanai's aunt, who runs a hospital in Lusibari and is recognized for her persistence and respected presence in the community.

Piya's river guide, an illiterate fisherman with deep ties to the Sundarbans, whose actions influence various characters' experiences in the novel.

Kanai's childhood playmate and Fokir's mother, remembered for her self-possession and strong principles.

Fokir's ambitious wife, a trainee nurse eager to progress in her career and advocate for education as a path forward.

Kanai's uncle and Nilima's late husband, whose recovered journal plays a significant role in revealing past events and personal histories.