Georgian is the official language of Georgia. Abkhazian and Georgian are used in the Autonomous Republic of Abkhazia, and in the Samegrelo-Zemo-Svaneti Region there are Megrelian and Svan languages that locals speak together with Georgian.
Considering the Soviet past, when the nations used to communicate among themselves in Russian, almost every representative of the elderly generation speaks Russian. Young people, in particular, speak English and often some other European language.
Generally, international guests communicate and get around in English. Guides, bank representatives, store workers, and restaurant workers have a good command of the English language. When calling any information hotline, you are always offered English as a service option.
You may come across many people speaking many languages in Georgia and Tbilisi, particularly. Georgians, Abkhazians, Ossetians, Jews, Armenians, Azeris, Greeks, Ukrainians, Poles, Kurds, Avars, Germans, and other nations have been coexisting for centuries in Georgia.