Katalin Vesztergombi (born July 17, 1948)[1] is a Hungarian mathematician known for her contributions to graph theory and discrete geometry.

A student of Vera T. Sós and a co-author of Paul Erdős, she is an emeritus associate professor at Eötvös Loránd University[2] and a member of the Hungarian Academy of Sciences.

[3] As a high-school student in the 1960s, Vesztergombi became part of a special class for gifted mathematics students at Fazekas Mihály Gimnázium with her future collaborators László Lovász, József Pelikán, and others.

[D1][D2] With László Lovász and József Pelikán, she is the author of the textbook Discrete Mathematics: Elementary and Beyond.

[6][DM] Vesztergombi is married to László Lovász, with whom she is also a frequent research collaborator.