Alapan Bandyopadhyay (born 17 May 1961) is an ex-Indian Administrative Service (IAS) officer and former Chief Secretary of State for the Government of West Bengal. He is Chief Advisor for Chief Minister Mamata Banerjee since 1 June 2021. He took over from IAS officer Rajiva Sinha, in the year 2020, starting his tenure as Chief Secretary of West Bengal.