Vernadsky National Library of Ukraine, United Nations Depository Library in Holosiiv Raion, Kyiv, Ukraine.

The Vernadsky National Library of Ukraine is the country's largest library by collection size and floor space, a research institute of the History, Philosophy and Law Department of the National Academy of Sciences. Its holdings reached almost 15.8 million items by 2019, and it is organised into more than 40 units grouped into institutes such as those of library science, the Ukrainian book, manuscripts, archival studies and biographical research, plus conservation, computer technology and publishing centres and the Fund of Presidents of Ukraine.

Founded on 2 August 1918 by a law signed by Hetman Pavlo Skoropadskyi, the library was shaped by a committee led by Volodymyr Vernadsky. In 1919 it received one room on Tereshchenkivska Street, then moved to the Pavlo Galagan College building. Evacuated to Ufa in 1941, it returned to Kyiv in 1944 and was named after Vernadsky in 1988.

The library's name honours Volodymyr Vernadsky, who chaired the Temporary Committee that founded it in 1918. Its collection includes 516 incunabula, about 300,000 manuscripts and over 6,500 books printed in Church Slavonic script from the 15th–16th centuries. Since 1996 it has housed the Fund of Presidents of Ukraine.

The library is organised into more than 40 departments grouped into institutes, centres and a service for government information support. Its staff of over 900 is roughly 65% library, 20% research and 15% auxiliary. Since 1957 it has taken part in the international interlibrary loan system, so items can be requested through partner libraries.

The library keeps a separate Fund of Ukrainian Presidents, created by presidential decree on 5 April 1996, the same decree that gave it national status. Its holdings are organised into more than 40 departments grouped into institutes, including one devoted to Ukrainian books and one to biographical research.