The paper aims to present an emerging scenario of population ageing in West Bengal on the basis of past trends. It was found that the elderly population in West Bengal has been growing in a faster rate than all India average. The current trend of population ageing also reveals the fact that, in future, there will be larger proportion of elderly population in the state, with higher age and majority of them would be women for whom better social security measures would be needed. It is the need of the hour to study the ageing processes in West Bengal, so that, its implication for the elderly population in particular and society at large could be judged.