Vladimir Batagelj (born June 14, 1948 in Idrija, Yugoslavia[1]) is a Slovenian mathematician and an emeritus professor of mathematics at the University of Ljubljana.

His book Exploratory Social Network Analysis with Pajek on blockmodeling, coauthored with Wouter de Nooy and Andrej Mrvar, is Batagelj's most cited work and has over 3300 citations.

[3] In 1975, 11 years before completing his PhD, Batagelj published a solo paper[4] in Communications of the ACM.

[3] Batagelj authored more than 20 textbooks in Slovenian, covering topics like TeX, combinatorics and discrete mathematics.

[6][7] Batagelj is particularly known for his work on Pajek,[8] a freely available software for analysis and visualization of large networks.