Witold Leon Julian Zglenicki (Russian: Витольд Згленицкий; January 6, 1850, in Stara Wargawa near Kutno – July 6, 1904, in Baku, buried in Wola Kiełpińska near Warsaw) was a Polish scientist, geologist, and philanthropist who worked in Azerbaijan.

Vitold Zglenicki was born in 1850 in the village of Wargawa Stara, Mazovia Province, Poland.

[3] He graduated from the Faculty of Mathematics and Physics of the Warsaw School of Economics in 1870 and the Saint Petersburg Mining Institute with honors in 1875.

[4][10] After moving to Baku, Vitold Zglenicki focused not only on his professional work but also on modernizing methods of oil extraction.

[17] He bequeathed the income from his oil fields to the "Józef Mianowski Fund," which supported Polish science, and other charitable organizations.

[3][25] In 2003, the "Vitold Zglenicki Scientific Fund" was established to support schools, universities, and research centers.

[26] In 2024, the National Museum of History of Azerbaijan hosted the presentation of a book about Vitold Zglenicki titled "Polish Nobel",[27] authored by Andrzej Jan Chodubski.