- Isolation and Community: The novel explores the themes of isolation and community, as Michael struggles to survive on the island and is eventually welcomed into the community of the Lepcha people.
- Nature and the Environment: The novel also focuses on the importance of nature and the environment, as Michael learns to appreciate the beauty and resources of the island.
- Friendship and Family: The novel explores the importance of friendship and family, as Michael forms a strong bond with Kensuke and his family, who become his surrogate family on the island.
- Personal Growth and Transformation: The novel also explores the theme of personal growth and transformation, as Michael learns to overcome his fears and insecurities, and becomes a more confident and self-reliant individual.
- War and Peace: Another theme in Kensuke's Kingdom is the contrast between war and peace. Michael comes from a world that is at war, but he finds peace and tranquility on the island. This contrast highlights the senselessness of war and the importance of finding peaceful resolutions to conflict.
