Citizens of 92 foreign countries can stay in Kyrgyzstan for up to 90 working days depending on their state of origin. Nationals of all EU countries can stay in Kyrgyzstan for up to 60 working days. The only exception is Greece, whose citizens have to register within 90 working days. Therefore, citizens of Lithuania can stay in Kyrgyzstan for 60 working days without registering.
After the aforementioned period, foreign nationals must register at government bodies of Kyrgyzstan responsible for the registration of foreigners. Further information (in Russian).