Amitav Ghosh is widely read as a novelist of history, migration, empire, and ecology, yet his treatment of gender has received less sustained attention. This article examines the representation of gender roles in The Circle of Reason, The Shadow Lines, The Glass Palace, The Hungry Tide, the Ibis Trilogy, and Gun Island, using a feminist-postcolonial framework drawn from de Beauvoir, Butler, Spivak, Chatterjee, Connell, and ecofeminist thought. It argues that Ghosh's fiction does not offer a single or consistent gender politics. Rather, it places women and men within the pressures of colonial modernity, nationalism, caste, migration, and environmental precarity, and allows these pressures to unsettle inherited scripts of domesticity, honour, and masculinity. Women such as Tha'mma, Uma Dey, Deeti, and Kusum exercise agency at the margins of official history, while men such as Alu, Kalua, and Fokir reveal the plurality of masculine roles. At the same time, the narrative focalisation of several novels remains male-centred, and some women characters function more as guides or symbols than as fully interiorised subjects. The article concludes that Ghosh's contribution lies in showing gender as historically produced and relationally negotiated.