Daan or Da'an may refer to:
People Daan (given name), Dutch short form for Daniël Saumya Daan (born 1982), Indian voice actor Serge Daan (1940–2018), Dutch zoologist
Places Mainland China Da'an, Hengyang (), a township in Hengyang County Da'an, Longshan () Da'an, Jilin () Da'an, Zigong ()
Taiwan Daan District, Taipei () Daan metro station Da'an River () Daan District, Taichung ()
Elsewhere Daʽan, Sanaa Governorate, Yemen
Chinese history Da'an (大安, 1075–1085), era name used by Emperor Huizong of Western Xia Da'an (大安, 1085–1094), era name used by Emperor Daozong of Liao Da'an (大安, 1209–1211), era name used by Wanyan Yongji, emperor of Jin dynasty
Other uses Daan (band), a Belgian band led by Daan Stuyven Daan (crater), crater on Mars named after the Chinese city Da'an, a character in TV series Earth: Final Conflict
See also Dayan (disambiguation) Dana (disambiguation) Daan Utsav, Indian festival