The Baltic Olympiad in Informatics (BOI) is an annual Olympiad in Informatics for the countries of Northern Europe: Denmark, Estonia, Finland, Germany, Iceland, Latvia, Lithuania, Norway, Poland, Sweden.

Unlike all other international Olympiads, six students from each country participate in this Olympiad.

Ukraine sometimes participates in this Olympiad as a guest country.

To qualify to the Olympiad, you need to participate in the Ukrainian Olympiad in Informatics.