Koidu (disambiguation)

Koidu is a city in Sierra Leone.

Koidu may also refer to one of several villages in Estonia:

• Koidu, Harju County, village in Saue Parish, Harju County
• Koidu, Lääne County, village in Haapsalu, Lääne County
• Koidu, Viljandi County, village in Viljandi Parish, Viljandi County