Dahan may refer to:

• Dahan, Iran (disambiguation), places in Iran
• Dahan River, a river in Taiwan

• Dahan (surname)
• Dahan (solar term), solar term of traditional East Asian Lunisolar calendar
• Dahan (1985 film), a 1985 Bangladeshi film
• Dahan (1997 film), a 1997 Indian Bengali-language film directed by Rituparno Ghosh
• Dahan (2018 film), a 2018 Bangladeshi film
• Dahan (TV series), Indian television series
• Dahan Institute of Technology, a university in Hualien County, Taiwan

• Han (disambiguation)