Dadong may refer to:

China

District

• Dadong District (大东区), Shenyang, Liaoning

Subdistricts (大东街道)

• Dadong Subdistrict, Guangzhou, in Yuexiu District, Guangzhou, Guangdong
• Dadong Subdistrict, Jilin City, in Chuanying District, Jilin City, Jilin
• Dadong Subdistrict, Donggang, Liaoning

Towns

Written as "大东镇":

• Dadong, Dabu County, Guangdong
• Dadong, Jiangsu, in Lianshui County

Written as "大垌镇":

• Dadong, Bobai County, Guangxi
• Dadong, Qinzhou, in Qinbei District, Qinzhou, Guangxi

Townships

• Dadong Township (大东乡), in Gucheng District, Lijiang, Yunnan

Other

• Da Dong Roast Duck Restaurant (often rendered as "DaDong"), main restaurant located in Dongcheng District, Beijing

South Korea

• Da-dong (다동 / 茶洞), neighbourhood of the Jung-gu District in Seoul