Baiji may refer to:

• Baiji, the Yangtze River dolphin (Lipotes vexillifer)
• Baiji, Iraq, a city
• Baiji District, Iraq
• Baiji Township, Xiuning County (白际乡), Anhui, China
• Baiji Township, Nanning (百济乡), in Yongning District, Nanning, Guangxi, China
• An ancient kingdom in the southern Korean peninsula, called Baekje in Korean

See also

• Bahjí
• Baijiu