Tibor Gallai
| Tibor Gallai | |
|---|---|
| Born | 15 July 1912 | 
| Died | 2 January 1992 (aged 79) Budapest, Hungary | 
| Nationality | Hungarian | 
| Alma mater | Technical University of Budapest | 
| Known for | Sylvester–Gallai theorem | 
| Scientific career | |
| Fields | Mathematics | 
| Institutions | Eötvös Loránd University | 
| Doctoral advisor | Dénes Kőnig | 
| Doctoral students | László Lovász | 
Tibor Gallai (born Tibor Grünwald, 15 July 1912 – 2 January 1992) was a Hungarian mathematician. He worked in combinatorics, especially in graph theory, and was a lifelong friend and collaborator of Paul Erdős. He was a student of Dénes Kőnig and an advisor of László Lovász. He was a corresponding member of the Hungarian Academy of Sciences (1991).