Shams un Nahar (, ; transliterations vary), an Arabic phrase meaning "Sun of the morning", is a female Bengali Muslim given name. Notable bearers of the name include;
Shamsunnahar Mahmud (1908–1964), Bengali writer, politician and educator Shamsunnahar Khwaja Ahsanullah (1934-2025), Bangladeshi aristocrat and former MP Shamsun Nahar Iffat Ara (born 1939), Bangladeshi writer and social activist Shamsun Nahar (born 1957), Bangladeshi politician Shamsun Nahar Ahmed (died 2017), Bangladeshi politician Shamsun Nahar Begum, Bangladeshi lawyer and politician Shamsun Nahar Shelley, Bangladeshi politician Shamsunnahar (footballer, born 2003), Bangladeshi footballer Shamsunnahar Jr. (born 2004), Bangladeshi footballer
See also Shamsunnahar-Osman Ghani Shikkha Niketon, a private secondary school in Kishoreganj District, Bangladesh