Dewan is a surname. Notable people with the surname include:
Azra Dewan (born 2003), South African rhythmic gymnast Barun Bikash Dewan (born 1969), Bangladeshi retired footballer Bhim Bahadur Dewan (1961–1999), Indian soldier killed in action Binoy Kumar Dewan (1925–2021), Bangladeshi politician Hari Chand Dewan (1921–2017), Indian air marshal Iffat Ara Dewan, Bangladeshi singer and painter Jenna Dewan (born 1980), American actress and dancer Kamini Mohan Dewan (1890–1976), Bangladeshi politician Karan Dewan (1917–1979), Indian actor in Hindi films, born Dewan Karan Chopra Krishan Dev Dewan, Indian social worker and activist Leon Dewan, American artist, inventor and musician Leslie Dewan (born 1984), American nuclear engineer, co-founder and chief executive officer of Transatomic Power Meera Dewan, Indian documentary filmmaker and columnist Moni Swapan Dewan (born 1954), Bangladeshi politician Nirupa Dewan, Bangladeshi human rights activist Parvez Dewan, Indian former administrator, author and librettist Patrick Michael Dewan (1890–1988), Canadian politician Rahul Dewan (born 1986), Indian cricketer Ramesh Dewan (born 1938), Indian former cricketer Saba Dewan, Indian documentary film maker Subimal Dewan (died 2009), Bangladeshi social worker, development worker and politician Sudipta Dewan (died 2015), Bangladeshi politician Ted Dewan, American-born British writer and illustrator of children's books Tikendra Dal Dewan (born 1953), retired British Army Gurkha major and activist for the rights of British Gurkhas