There are three types of visas:
1. Short-term visa (C), allows stay in Ukraine for the period up to 90 days within 180 days starting from the date of first entry to Ukraine (not issued to the US citizens). There are single entry, two-entries and multiple-entries visas valid for the period of up to 5 years.
2. Long-term visa (D), issued for applicants entering Ukraine with the purpose of obtaining a residence permit in Ukraine (required by Migration authorities of Ukraine according to the legislation of Ukraine). Issued for 90 days (see details below).
3. Transit visa (B), which allows to transit travel through the territory of Ukraine within the period of 5 days.