Dongdan may refer to:

• Dongdan, Beijing, crossing on Beijing's Chang'an Avenue and also a part of eastern central Beijing
• Dongdan Kingdom, puppet kingdom established by the Khitan to rule the realm of the Balhae Kingdom in Eastern Manchuria
• Dongdan Station, interchange station on Line 1 and Line 5 of the Beijing Subway

• In Montreal
• Inmon, William H.
• Inmortal
• In Motion (David Becker album)
• In Motion (disambiguation)
• INMOTION SCV
• "INMS"
• INMS
• In Multiplicibus Curis
• In multitudes there is glorification of the king
• I. N. Murthy
• InMusic Brands
• In My Bed (Jason Derülo song)
• In My Blood (Black Stone Cherry song)
• In My Buisness
• In My Business
• In My Car (Ringo Starr song)
• In My City
• In my city
• In My City ft. Will.I.Am
• In My City (Priyanka Chopra song)
• In My Country, Men Have Breasts
• In my defens god me defend
• In My Dream
• In My Dreams (album)